Maintenance and establishment
The phase that decides whether any of it survives
Narrow it down
- Freegovernment10 min to read, 10 min to applyPerth / WA
Apply for a watering exemption
Water Corporation
Why this oneThe only lawful way to water a new Perth garden more than twice a week, and it publishes the schedule it expects you to follow rather than leaving you to guess. Spring and summer installs (1 October to 31 March) get 42 days: 3.5 mm three times a day for days 1 to 10, 5 mm twice a day for days 11 to 20, 10 mm daily to day 28, then 10 mm every second day to day 42. Autumn and winter installs (1 April to 30 September) get 35 days at 4 mm twice a day, then 7.5 mm daily, then 7.5 mm every second day. Apply on installation day, because the clock runs from installation and not from approval.
Change this for PerthNot granted to properties with a licensed bore — those are handled by the Department of Water and Environmental Regulation. Random inspections apply and breaching the conditions risks a $500 fine. Figures checked 2 August 2026; the periods are reviewed between seasons, so read the page on the day you apply rather than trusting this summary.
Link checked 2 Aug 2026 · from The first twelve weeks: establishment care
- Freecalculator5 minPerth / WA
How long should I run my sprinklers for
Water Corporation
Why this oneThe exemption schedule is written in millimetres and your controller is set in minutes, and this is the page that converts one to the other. Pop-up spray and micro spray apply 35 to 45 mm per hour and need 13 to 16 minutes for 10 mm; rotary applies 10 to 15 mm per hour and needs 40 to 60 minutes; gear drive rotary 10 to 20 mm per hour over 30 to 40 minutes; dripline 15 to 20 mm per hour over 30 to 40 minutes. Without these rates the establishment schedule is unusable.
Change this for PerthThese are nominal rates for a well-designed system at correct pressure. Your own catch-cup test beats the table every time, and a station with poor uniformity will not deliver the stated depth anywhere except the average.
Link checked 2 Aug 2026 · from The first twelve weeks: establishment care
- Freetool10 minPerth / WA
Why you need to adjust your irrigation
Water Corporation
Why this onePublishes the actual seasonal adjustment percentages to dial into the controller month by month for Perth and the South West: 100% in January and February, 80% in March, 60% in April, manual use only in May, Sprinkler Switch-off June to August, manual only in September, then 60% in October, 80% in November and 90% in December. This is the single setting that carries a garden from the end of its exemption into normal operation without either drowning it or starving it, and most controllers apply it to every station at once.
Link checked 2 Aug 2026 · from The first twelve weeks: establishment care
- Freearticle5 minPerth / WA
Tips for hand watering
Water Corporation
Why this oneConfirms the rule that keeps a new garden alive after the exemption expires: a watering can or hand-held garden hose may be used on any day of the week, with before 9am or after 6pm recommended so the water reaches the roots instead of evaporating. It also gives the check most people skip — dig your fingers through the mulch and into the soil before you water anything.
Change this for PerthHand watering means hand-held. A hose left running on a tree, a sprinkler on the end of a hose, or a timer on a tap is irrigation, and it is bound by the roster and the Sprinkler Switch-off.
Link checked 2 Aug 2026 · from The first twelve weeks: establishment care
- Freegovernment10 minPerth / WA
Establishing a new lawn
Water Corporation
Why this oneNew turf runs a harsher establishment schedule than beds do, and this sets the two dates that matter. First mow when the roots have taken, usually 10 to 14 days after laying in summer and 14 to 21 days in winter. Slow release fertiliser immediately after laying, then a light feed of organic fertiliser 14 days after installation. It also states plainly that you need an approved exemption to water a new lawn at all.
Link checked 2 Aug 2026 · from The first twelve weeks: establishment care
- Freegovernment10 minPerth / WA
Improving your soil: wetting agents and mulch
Water Corporation
Why this oneThe two maintenance jobs that decide whether establishment water reaches roots or runs past them. Wetting agent at the start of winter and again in early summer, always watered in until it foams, which is how you know it has activated. Mulch at 5 to 10 cm of chunky coarse material rather than fine straw or lucerne, which the utility credits with saving up to 20% of garden water. Both are repeat jobs, not one-off installs.
Link checked 2 Aug 2026 · from The first twelve weeks: establishment care
- Freearticle45 minOverseas — adapt it
Chapter 7: Diagnostics, Extension Gardener Handbook
NC State Extension
Why this oneTurns the weekly walk from worrying into diagnosis. It teaches a repeatable ten-step method — identify the plant, describe the problem, review cultural practices, check the distribution of damage across the landscape and on the plant — and it names the confusions that cost new gardens the most. Overwatering produces symptoms identical to being planted too deeply; underwatering produces wilting and marginal leaf burn that shows up the first time the plant dries out. Its distribution rule is the useful one: several plant families with the same symptom in the same spot points at the environment or the irrigation, not at a pest.
Change this for PerthNorth American university extension material. The diagnostic method is universal; the pest and disease examples are not. Use it for the reasoning and take actual identifications to the WA sources in [WA pests and diseases](/curriculum/maintenance/wa-pests-and-diseases/). Ignore anything about cold damage or freeze injury.
Link checked 2 Aug 2026 · from The first twelve weeks: establishment care
- Freegovernment10 minPerth / WA
Garden bore regulation
Be Groundwater Wise, Department of Water and Environmental Regulation
Why this oneRead this if your new garden is watered from a bore, because Water Corporation does not process exemptions for licensed bore properties and the process is different. It confirms the two rostered days a week before 9am or after 6pm, the 1 June to 31 August sprinkler ban applying equally to bore water, the 0.2 hectare (2,000 square metre) threshold above which a bore needs a licence, and the number to ring for an establishment exclusion if you do not hold a Water Corporation account: 1800 508 885.
Link checked 2 Aug 2026 · from The first twelve weeks: establishment care
- Freegovernment15 min to claimPerth / WA
Treebate
Department of Water and Environmental Regulation
Why this oneIf you planted a native tree, there is money on the table and a deadline attached to it. The State Government scheme announced in January 2025 pays a rebate of up to $150 on one native tree per Western Australian aged 18 or over, claimed through the ServiceWA app with a tax invoice and a photo of the plant label. The tree must be a native species with a canopy reaching at least three metres at maturity.
Change this for PerthChecked 2 August 2026. Round 1 opened 28 July 2025 and the live counter on the page showed roughly 90% of the fund claimed as at 27 July 2026, with a banner reading Round 2 Coming Soon. Check the counter before you rely on it, and keep the receipt regardless — a receipt you kept is claimable later, a receipt you binned is not.
Link checked 2 Aug 2026 · from The first twelve weeks: establishment care
- Freegovernment15 minPerth / WA
Working safely in hot conditions
WorkSafe WA
Why this oneEstablishment care in Perth means being in the garden in February, often alone, often at the hottest part of the day because that is when a plant shows you it is in trouble. This is the regulator's plain description of the progression from discomfort to heat exhaustion to heat stroke — irritability, confusion, speech problems, hot dry skin, body temperature above 40 degrees — and its practical control, which is 250 ml of water every 15 to 20 minutes and rest breaks somewhere cool.
Link checked 2 Aug 2026 · from The first twelve weeks: establishment care
- Freegovernment25 minPerth / WA
Nyoongar calendar
Bureau of Meteorology, Indigenous Weather Knowledge
Why this oneThe primary reference for this lesson and the one to read first. It sets out all six seasons with the ecological indicators that actually signal the change — flying ants and dew in Djeran, ravens and black swans pairing in Makuru, balga flower stalks emerging at the end of Djilba, snakes waking in October. It states plainly that the seasons are indicated by what is happening around us rather than by dates, and that aligning them to Western months is only an overview. It also carries a note on spelling and a copyright statement that governs how the material may be reused.
Change this for PerthThe month ranges are an approximation the Bureau publishes for convenience. Read the indicators, not the calendar — in a late year Djeran runs into June and Makuru starts late, and your garden will tell you before the date does.
Link checked 2 Aug 2026 · from The Perth year: a maintenance calendar on the Noongar six seasons
- Freegovernment10 minPerth / WA
Fact Sheet: The Noongar Six Seasons
Department of Primary Industries and Regional Development (DPIRD)
Why this oneA free, printable one-page WA government summary of all six seasons, produced by DPIRD's marine education program. It is the version to pin on the shed wall or the inside of the retic cupboard, because it fits on one sheet and gives each season its weather, flowering and animal cues at a glance. It credits its sources, which is more than most summaries of this material do.
Change this for PerthWritten for a marine and fishing audience, so the food and harvesting detail is coastal. The seasonal cues themselves are the part you want.
Link checked 2 Aug 2026 · from The Perth year: a maintenance calendar on the Noongar six seasons
- Freearticle20 minPerth / WA
Listening to the seasons
Department of Biodiversity, Conservation and Attractions (LANDSCOPE, Autumn 2024)
Why this oneWritten by Allan Wills, a senior technical officer with DBCA's Biodiversity and Conservation Science branch, this is the best free explanation of why a six-season calendar built on observation outperforms a four-season one built on dates. It works through boodjar as a lived concept of place, the relationships between fire, water and biological productivity that the calendar encodes, and the flammability paradox of burning during hot dry periods without losing control of the fire.
Link checked 2 Aug 2026 · from The Perth year: a maintenance calendar on the Noongar six seasons
- Freegovernment10 minPerth / WA
Sprinkler Switch-off
Water Corporation
Why this oneThe single hardest date on your calendar, from the body that enforces it. Sprinklers off from 1 June to 31 August, every year, for scheme and bore users alike, with a $100 fine. It also gives the four things people get wrong: rainwater tank systems are exempt, a new lawn or garden needs an applied-for exemption, a controller that malfunctions is still your infringement, and active sporting grounds are the only routine exception.
Link checked 2 Aug 2026 · from The Perth year: a maintenance calendar on the Noongar six seasons
- Freegovernment10 minPerth / WA
Why you need to adjust your irrigation
Water Corporation
Why this oneThe published month-by-month seasonal adjustment percentages for Perth, which is the closest thing that exists to an official watering calendar: 100% in January and February, 80% March, 60% April, manual only in May, switch-off June to August, manual only in September, then 60% October, 80% November and 90% December. It explains how the percentage works against your base run time, so a 10 minute station at 80% runs 8 minutes. Six controller adjustments a year, and it is the single highest-value habit in this lesson.
Change this for PerthThe percentages assume a base run time already set correctly for your sprinkler type and a garden on Perth sand. Set the base first from the run-time figures, then apply the seasonal percentage on top.
Link checked 2 Aug 2026 · from The Perth year: a maintenance calendar on the Noongar six seasons
- Freegovernment10 minPerth / WA
Apply for a watering exemption
Water Corporation
Why this oneThe legal route to watering a newly planted garden outside the roster, including during the winter switch-off. It gives the two exemption lengths — up to 42 days for a lawn or garden installed between 1 October and 31 March, up to 35 days between 1 April and 30 September — the recommended 10 mm daily in the warm half and 7.5 mm in the cool half, and the detail that catches people out: apply on the day of installation, because the clock runs from planting, not from application.
Change this for PerthBreaching the conditions of an exemption carries a fine of up to $500, and the liability sits with the property owner, not the contractor who installed the lawn or the retic.
Link checked 2 Aug 2026 · from The Perth year: a maintenance calendar on the Noongar six seasons
- Freearticle20 minPerth / WA
Fertilise Wise
South East Regional Centre for Urban Landcare (SERCUL)
Why this oneThe clearest WA statement of when to feed and when not to: apply in spring or early autumn — September, October, November, March and April — and do not fertilise in summer or winter. It comes from the catchment group that runs the Phosphorus Awareness Project in the Canning and Southern River catchments, so the reasoning is about nutrient leaching into Perth's waterways rather than product sales, and it publishes phosphorus limits for low phosphorus retention index soils, which is exactly what Perth sand is.
Change this for PerthWritten for local government turf managers, so the rates are per hectare and the leaf tissue targets are for sports fields. Take the timing rule and the phosphorus caution; ignore the hectare arithmetic and use the label rate on a domestic product.
Link checked 2 Aug 2026 · from The Perth year: a maintenance calendar on the Noongar six seasons
- Freetool15 minPerth / WA
Waterwise Plants directory
Water Corporation
Why this oneSearchable by suburb or by plant name, and it publishes a water rating for each entry — minimum, little or medium maintenance — which is what turns a plant list into calendar entries, because it rates how much attention each plant needs while it is establishing and which ones can be left alone. For Perth and the South West, waterwise means the plant needs watering only once a week in summer, or on your rostered days, once established in improved soil.
Change this for PerthThe definition of waterwise differs by region within WA, and the directory covers the whole state. Filter by your suburb rather than browsing the full list.
Link checked 2 Aug 2026 · from The Perth year: a maintenance calendar on the Noongar six seasons
- Freearticle10 minPerth / WA
Maintaining a healthy lawn
Water Corporation
Why this onePublishes actual numbers for the lawn entries on your calendar rather than generalities: mow every 7 to 21 days at 10 to 20 mm through summer, apply a premium soil wetting agent three to four times a year, and use a slow-release fertiliser from the start of spring and every two months through the warmer months at roughly 2 kg per 100 square metres. Those figures convert directly into dated tasks.
Change this for PerthThe 10 to 20 mm mowing height suits couch and kikuyu. Buffalo varieties, which are very common on Perth blocks, are mown higher — check the height for your specific variety before you scalp it.
Link checked 2 Aug 2026 · from The Perth year: a maintenance calendar on the Noongar six seasons
- Freegovernment20 minPerth / WA
Prepare for bushfire
Department of Fire and Emergency Services (DFES)
Why this oneGarden maintenance in Birak and Bunuru is partly fuel management, and this is the state fire agency's own guidance on what that means. It defines the asset protection zone as a defendable space adjacent to the building no less than three metres wide with minimal vegetation and free of combustible items, points to the Bush Fire Risk Treatment Standards for vegetation management detail, and provides a printable property preparation checklist.
Change this for PerthDFES sets the standards; your local government sets the dates. The annual firebreak and fuel load notice, the restricted and prohibited burning periods and any harvest bans are issued by your council and vary across the metropolitan area — confirm your own dates with your local government each year.
Link checked 2 Aug 2026 · from The Perth year: a maintenance calendar on the Noongar six seasons
- Freegovernment10 minPerth / WA
Irrigation and sprinkler testing
Water Corporation
Why this oneThe only page that tells you what you are legally allowed to do while auditing. It states the allowance plainly — you may test on your rostered watering days, before 9am or after 6pm, for no longer than two minutes per station — and then gives the meter baseline method for finding a hidden leak and the three-step sequence for isolating a fault between the master valve, a zone solenoid and the zone pipe. It also confirms that Waterwise Garden Irrigators are exempt from watering schedules including the Sprinkler Switch-off, so they can test at any time without notifying anyone.
Link checked 2 Aug 2026 · from Watering through the year and auditing your reticulation
- Freegovernment10 minPerth / WA
Seasonal adjustments for sprinkler systems
Water Corporation
Why this oneThis is the single most useful page in the lesson, because it publishes a month-by-month seasonal adjustment percentage for Perth and the South West rather than telling you to water less in winter. January and February at 100%, March 80%, April 60%, May manual only, June to August off for the Switch-off, September manual only, October 60%, November 80%, December 90%. It also explains how the percentage feature works — it scales every station's run time, so you set summer once and touch one number thereafter.
Link checked 2 Aug 2026 · from Watering through the year and auditing your reticulation
- Freegovernment10 minPerth / WA
Do you have efficient sprinkler heads? (the catch cup test)
Water Corporation
Why this oneThe householder version of an irrigation audit, and the one to follow if the full distribution-uniformity calculation is more than you want. Spread cups evenly through the zone, at least 1 metre from the nearest sprinkler, run the station and time how long it takes to reach 10 mm — that time is your run time. It also lists what uneven cups actually mean: misaligned heads, a leak, a blocked or worn nozzle, or the wrong sprinkler type for the zone. There is an embedded video with a transcript.
Change this for PerthThe page does not specify how many cups to use. Eight is a workable minimum on a suburban lawn station and twelve to sixteen is better; the professional audit minimum is twenty-four.
Link checked 2 Aug 2026 · from Watering through the year and auditing your reticulation
- Freecalculator5 minPerth / WA
How long should I run my sprinklers for
Water Corporation
Why this oneThe published application rates that turn a catch-cup reading into a verdict. Pop-up and fixed spray and micro spray at 35 to 45 mm per hour, needing 13 to 16 minutes for 10 mm; rotary at 10 to 15 mm per hour needing 40 to 60 minutes; gear drive rotary at 10 to 20 mm per hour needing 30 to 40 minutes; dripline at 15 to 20 mm per hour needing 30 to 40 minutes. Comparing these to what your controller is actually set to is the fastest diagnostic in this lesson.
Change this for PerthThese are bands for a correctly spaced, correctly pressured station, and the 10 mm per watering day target is a Perth default for sandy soil on a two-day roster. Your measured precipitation rate is always the better number.
Link checked 2 Aug 2026 · from Watering through the year and auditing your reticulation
- Freegovernment10 minPerth / WA
Programming your irrigation
Water Corporation
Why this oneCovers the controller side of the audit: the three categories of controller, the fact that start times apply to a whole program rather than to individual stations, and the instruction to regularly replace backup batteries and confirm the programme still matches your rostered days. It carries the sentence worth remembering — watering on the wrong days because of a programming error is not a valid reason for breaching your watering days.
Link checked 2 Aug 2026 · from Watering through the year and auditing your reticulation
- PaidsupplierWorks anywhere
ESP-TM2 series controllers — battery and memory specification
Rain Bird
Why this oneIncluded for one specific line in the specification, because it settles a question that wastes a lot of people's time: "External battery back-up not required. Nonvolatile memory permanently saves the current programming and a 10 year life lithium battery maintains the controllers time and date during power outages." That is how most controllers sold in the last decade behave — the programme survives without a battery, and it is the clock that is at risk. Knowing which of those two your controller does tells you what to check after an outage.
Change this for PerthRain Bird's global product page, not a WA one, and models sold here vary. Hunter and Holman units common in Perth use the same non-volatile memory approach, but older controllers genuinely do lose the programme without a 9V battery. Read your own controller's manual before assuming either way.
Link checked 2 Aug 2026 · from Watering through the year and auditing your reticulation
- Freearticle30 minOverseas — adapt it
How to perform a catch can irrigation audit on a home lawn sprinkler system (Guide H-510)
New Mexico State University Cooperative Extension Service
Why this oneThe best free step-by-step audit method published anywhere, written by Cheryl Kent and Bernd Leinauer for a desert climate with sandy soil, which makes it an unusually good fit for Perth. It gives can placement patterns for spray heads and for rotors separately, the low-quarter distribution uniformity calculation, a wind limit for valid testing, and a rating table — for fixed spray, excellent 0.75, very good 0.65, good 0.55, fair 0.50, poor 0.40, with rotors rated higher at every step (excellent 0.80, good 0.65) — with the advice that a system should at least rate good.
Change this for PerthImperial units throughout: cans are spaced 5 to 8 feet (1.5 to 2.4 m) apart, the wind limit is 5 mph (about 8 km/h), and volumes are converted to inches. Convert to millimetres and measure the cans with a steel rule instead. The 24-can minimum is a professional standard designed for large zones; on a small Perth lawn station, twelve to sixteen is the practical version.
Link checked 2 Aug 2026 · from Watering through the year and auditing your reticulation
- FreegovernmentPerth / WA
Waterwise Irrigation Rebate
Water Corporation
Why this oneTwo of the faults this audit most often turns up — a hidden pipe leak and a failed solenoid valve — are exactly the two eligible services, and every rebated service includes a check and adjustment of the automatic controller. Up to $200 is credited to your Water Corporation account, so if the audit finds something you cannot fix yourself, having a listed irrigator do it can return most of the call-out.
Change this for PerthChecked on 2 August 2026, this offer is CLOSED. The last published round ran from 1 September 2025 to 31 May 2026 for Perth and Peel Water Corporation account holders with a system that has watered in the last two years, and applications had to be lodged within 30 days of the service. Rounds have opened around 1 September in recent years and allocations can run out early, so check this page before you book spring work.
Link checked 2 Aug 2026 · from Watering through the year and auditing your reticulation
- FreedirectoryPerth / WA
Find a Waterwise Programs Specialist
Irrigation Australia
Why this oneThe searchable list of Waterwise Garden Irrigator and Waterwise Irrigation Design Shop members, run by Irrigation Australia as the national peak body. This is the filter that matters for two reasons: only businesses on this list can process the Water Corporation rebate, and only an endorsed irrigator can legally run your system outside the roster and during the Sprinkler Switch-off, which is the one way to get a full audit done in winter.
Change this for PerthEndorsement means the business has been appointed to deliver the programs, not that it is the cheapest or the most skilled designer. Filter by suburb and search radius; the site also carries Victorian content, so check you are looking at WA listings.
Link checked 2 Aug 2026 · from Watering through the year and auditing your reticulation
- Freearticle20 minPerth / WA
Establishing, Maintaining and Fertilising your Lawn According to your Soil Type
Phosphorus Awareness Project, South East Regional Centre for Urban Landcare (SERCUL)
Why this oneThe only Perth document that publishes actual numbers for a home garden rather than telling you to follow the packet. It maps the metro area into five soil groups with their pH and phosphorus retention, then gives maximum rates — 25 g per square metre for a complete fertiliser, 12 g per square metre for a nitrogen-only product above 20% N — and a calendar: two applications in spring and two in early autumn (September, October, November, March, April), and none in summer or winter. It also carries the trace-element differences between alkaline coastal soils and acid inland sands, which is the reason the same fertiliser performs differently in Sorrento and in Gosnells.
Change this for PerthThe brochure points you to www.fertilisewise.org.au for its soil-type map. That domain no longer resolves as of 2 August 2026, so use the soil identification in Phase 3 of this course instead. The advice itself is lawn-led; garden beds get less coverage.
Link checked 2 Aug 2026 · from Fertilising Perth sand: little and often, and the phosphorus trap
- Freegovernment15 minPerth / WA
Environmental Protection (Packaged Fertiliser) Regulations 2010
Western Australian Legislation
Why this oneThe law that quietly shapes every bag on a WA shelf, and almost nobody in the trade has read it. It caps phosphorus at 2% by weight in garden fertiliser and 1% in lawn and all-purpose fertiliser, forces the nitrogen-to-phosphorus ratio between 5:1 and 20:1 where there is more than 0.5% phosphorus, and requires the phosphorus percentage to be printed on the label. It also tells you what it does not cover — raw manure, unprocessed vegetable matter and mulch — which is exactly where an over-phosphorus problem in a Perth garden usually comes from.
Change this for PerthRead the regulations dated on and after 1 January 2013 (regulations 8, 10, 11 and 12). Regulations 7 and 9 are the superseded pre-2013 caps and carried an exemption for controlled release and processed organic fertiliser that the current caps do not.
Link checked 2 Aug 2026 · from Fertilising Perth sand: little and often, and the phosphorus trap
- Freearticle25 minPerth / WA
Nutrient Best Management Practice Recommendations (2025)
Fertilise Wise / Phosphorus Awareness Project (SERCUL)
Why this oneWritten for local government turf managers, and the closest thing Perth has to a published decision rule for whether to apply phosphorus at all. It names the Colwell test as the standard phosphorus method for WA conditions, pairs it with the Phosphorus Retention Index, and gives a table: PRI of zero or negative means do not apply phosphorus, full stop. It also states plainly that native garden areas generally need no or very low additional nutrients, and that couch and buffalo should not be fertilised in winter because they may be dormant.
Change this for PerthRates are given in kilograms per hectare for sports fields and parks. The testing methods, the decision table and the timing rules transfer straight to a suburban block; the rates do not — convert or ignore them.
Link checked 2 Aug 2026 · from Fertilising Perth sand: little and often, and the phosphorus trap
- Freegovernment20 minPerth / WA
Growing Western Australian plants
Botanic Gardens and Parks Authority (Kings Park)
Why this oneKings Park horticulturists publish a short care note for each WA species they grow, and the fertiliser line is consistent and unambiguous. On Banksia baxteri: "When planting, fertilise with a granular slower release fertiliser that is low in phosphorous and formulated for native plants." On Banksia nivea: "When planting use a slow release granular fertiliser that is specially formulated for native plants and is low in phosphorous." This is the state botanic garden telling you the rule, species by species, for free.
Change this for PerthThe advice sits on the individual plant pages, not the index — click through to the species you actually own. Coverage is limited to the species Kings Park grows, so it will not have every grevillea cultivar in a Perth nursery.
Link checked 2 Aug 2026 · from Fertilising Perth sand: little and often, and the phosphorus trap
- Freearticle20 minAustralian
Phosphorus Needs of Some Australian Plants
Australian Native Plants Society (Australia) — research by Kevin Handreck, CSIRO Division of Soils
Why this oneThe actual experimental data behind the folklore, and the reason you can stop guessing. Handreck scored species by their response to increasing phosphorus, and the worst-affected list is dense with WA plants — Banksia attenuata, B. baueri, B. baxteri, several Hakea, Petrophile, Bossiaea and Acacia. It also gives the controlled-release phosphorus concentrations nurseries actually use for sensitive species, around 1.3% phosphorus, which is the number to hold a retail bag against.
Change this for PerthWritten from a nursery and potting-mix perspective, so rates are per cubic metre of mix rather than per square metre of garden. Use it as a sensitivity ranking, not as a garden dose rate.
Link checked 2 Aug 2026 · from Fertilising Perth sand: little and often, and the phosphorus trap
- Freearticle45 minPerth / WA
Phosphorus nutrition of phosphorus-sensitive Australian native plants: threats to plant communities in a global biodiversity hotspot
Lambers et al., Conservation Physiology (Oxford University Press), 2013
Why this oneThe mechanism, from the UWA group that did the work on southwest WA soils. Phosphorus-sensitive Proteaceae are non-mycorrhizal and use cluster roots to scavenge phosphorus from soils that are among the most impoverished on earth; the trade-off is that they have almost no ability to down-regulate phosphate uptake when phosphorus is abundant. They keep taking it up until it accumulates in the leaves and poisons them. Open access, so you can read the whole thing.
Change this for PerthA peer-reviewed physiology paper, not a gardening guide. Read the introduction and discussion for the reasoning and skip the transporter-gene detail unless you want it.
Link checked 2 Aug 2026 · from Fertilising Perth sand: little and often, and the phosphorus trap
- Freegovernment8 minPerth / WA
How to keep your lawn healthy during winter
Water Corporation
Why this oneThe state water utility's winter position, and worth reading precisely because it sits slightly at odds with the Fertilise Wise calendar. It allows a slow release fertiliser once or twice over winter, suggests looking for potassium and iron rather than nitrogen, and — most usefully — says you may not need to fertilise at all in winter if you fed in autumn. Reconciling that with the nutrient-export advice is a real decision this lesson makes you take.
Link checked 2 Aug 2026 · from Fertilising Perth sand: little and often, and the phosphorus trap
- Freegovernment10 minPerth / WA
Waterwise gardens, lawns and verges
Be Groundwater Wise, Department of Water and Environmental Regulation
Why this oneDWER's own homeowner guidance, and the source of the widely quoted Perth default of a slow-release fertiliser every two months through the warmer months and once in winter. It pairs that with the part people skip — improving the sand first with compost, a wetting agent and clay so it can hold what you apply — and 5 to 10 cm of coarse mulch. On a low-retention sand the soil work does more for plant nutrition than the fertiliser does.
Change this for PerthThe every-two-months default is a general lawn schedule. If you are on deep grey Bassendean sand or anywhere near a wetland or the river, the Fertilise Wise spring-and-autumn-only calendar is the safer starting point.
Link checked 2 Aug 2026 · from Fertilising Perth sand: little and often, and the phosphorus trap
- FreecoursePerth / WA
RiverWise Gardening presentations and events
River Guardians, Department of Biodiversity, Conservation and Attractions
Why this oneFree community sessions with Dr Josh Byrne, the ABC Gardening Australia presenter and environmental scientist, on turning a garden into a waterwise, RiverWise, climate-resilient one — run by the same River Guardians program as the Phosphorus Awareness Project. Checked on 2 August 2026, upcoming sessions are listed for the Everlasting Kings Park Festival (18 September to 4 October 2026, day and time to be confirmed) and A Day on the Bay on Sunday 18 October, 10.00am to 1.00pm, at Mrs Herbert's Park and the Claremont Foreshore.
Change this for PerthDates change each season and sessions fill. Confirm on the page before you plan around one.
Link checked 2 Aug 2026 · from Fertilising Perth sand: little and often, and the phosphorus trap
- Paid · $199course8 hours of practical trainingPerth / WA
Fertilise Wise Fertiliser Training
Phosphorus Awareness Project (SERCUL), delivered by turf agronomist John Forrest
Why this oneThe page states the course is $199 for 8 hours of practical training, covering soils and plant requirements, fertiliser types and how to apply them, auditing fertiliser applications, and rates of application versus rates of nutrients — the last of which is the skill most gardeners never acquire. Aimed at turf managers and local government officers, so it is the professional version of this lesson.
Change this for PerthNo intake dates or venue are published on the page — SERCUL asks you to contact them to book a place. If you only want the knowledge and not the certificate, the free Fertilise Wise brochure and the Nutrient BMP Recommendations above cover most of the same ground at no cost.
Link checked 2 Aug 2026 · from Fertilising Perth sand: little and often, and the phosphorus trap
- Freegovernment20 minPerth / WA
Polyphagous shot-hole borer
Department of Primary Industries and Regional Development (DPIRD)
Why this oneThe single page that changes how you prune and dispose of green waste in Perth, and the one most homeowners have not read. It sets out the current Quarantine Area rules for moving wood and plant material, the green waste transport requirement, the symptoms to look for while you are cutting, and DPIRD's own tool hygiene advice — sanitise any tool including chainsaws and woodchippers that has touched infected wood, with 70% ethanol as the preferred disinfectant.
Change this for PerthThe page was last updated 12 November 2025 and the response is actively changing — the national programme has moved from eradication to Transition to Management and a new Quarantine Area Notice is in force. Re-read it before a big pruning job rather than relying on what you remember.
Link checked 2 Aug 2026 · from Pruning: what, when and why
- Freegovernment10 minPerth / WA
PSHB Western Australian Host List (Version 6, 30 June 2025)
Department of Primary Industries and Regional Development (DPIRD)
Why this oneTen pages listing every plant confirmed in WA as a shot-hole borer host, sorted by susceptibility rating from Extreme down to Negligible, split into introduced, Australian native and WA native species. It answers the only question that matters before you prune a tree in Perth: is this one of them? Box elder maple, coral tree and black locust are rated Extreme; common fig, white mulberry, London plane, poinciana and Moreton Bay fig are Very High; marri, red flowering gum, avocado, English oak and liquidambar are High.
Change this for PerthDPIRD says the list is updated frequently and that many WA species remain of unknown susceptibility — absence from the list is not proof a tree is safe. Check you have the current version number before relying on it.
Link checked 2 Aug 2026 · from Pruning: what, when and why
- Freegovernment5 minPerth / WA
Are my trees too close to powerlines?
Western Power
Why this oneThe network operator's own published clearance zones, which is the number you need before you decide whether a branch is yours to cut. Urban: 2.5 metres to the side and 2 metres below. Semi-rural and rural: 4 metres to the side and 2.5 metres below. It asks that overhanging branches be removed, because there should be no branches within the clearance area above the powerlines. It also states that Western Power may now trim branches above lines and invoice you for it, and that you should hire a professional tree pruner or arborist because trimming anywhere near powerlines is dangerous.
Change this for PerthThe stated distances are typical, not universal — Western Power says clearance zones vary with conductor type, fire risk and span length. Ring 13 10 87 for your specific street before working near a line.
Link checked 2 Aug 2026 · from Pruning: what, when and why
- Freearticle8 minOverseas — adapt it
Why Topping Hurts Trees
International Society of Arboriculture
Why this oneThree pages that will stop you accepting a cheap quote from someone offering to lop your tree. It defines topping precisely — cutting to stubs, or to laterals not large enough to assume the terminal role — then works through the consequences: 50 to 100% of the leaf-bearing crown removed, dormant buds forced into weakly attached shoots, bark suddenly exposed to sunlight causing sunburn, cankers and splitting, and large wounds the tree cannot close. The economic argument at the end is the one to quote at a contractor.
Change this for PerthNorth American publication. The biology is universal, and the sunburn section applies harder here than where it was written — Perth's summer UV and 40 °C days punish newly exposed bark on marri, citrus and maples far faster than a US climate does.
Link checked 2 Aug 2026 · from Pruning: what, when and why
- Freearticle8 minOverseas — adapt it
Pruning Young Trees
International Society of Arboriculture
Why this oneThe clearest free statement of where the cut goes, with a labelled diagram of the branch collar. It gives the rules this lesson is built on: make cuts just outside the branch collar; shorten a long branch back to a secondary branch or bud, because cuts made between buds or branches lead to stem decay, sprout production and misdirected growth; use bypass rather than anvil pruners; move to loppers or a saw above about 13 mm; and limit pruning of newly planted trees to dead or broken wood until the second or third year. It also settles the wound dressing question — dressings do not reduce decay or speed wound closure.
Change this for PerthWritten for temperate northern-hemisphere street trees, so ignore its seasonal timing entirely and use the Perth table in this lesson instead. The cut geometry and tool advice transfer without change.
Link checked 2 Aug 2026 · from Pruning: what, when and why
- Paid · $114.35 incl GSTstandard1 hourAustralian
AS 4373-2007 Pruning of amenity trees
Standards Australia (via Intertek Inform, authorised distributor)
Why this oneThe document every competent Australian arborist works to, and the one to name in writing when you engage a contractor. It specifies methods for deadwooding, crown thinning, selective pruning, formative pruning, reduction pruning, crown lifting, pollarding, remedial pruning and line clearance, and it explicitly identifies lopping, topping, wound painting and flush cutting as unacceptable practices. Published 2007, reconfirmed 25 September 2020, so it is current.
Change this for PerthGenuinely expensive for one household. You do not need to own it to benefit from it — writing "all pruning to AS 4373-2007" into your contractor's scope does the work, and the free ISA brochures above cover the same cut geometry. Buy it only if you are pruning a lot of trees or arguing with a contractor about what you were sold.
Link checked 2 Aug 2026 · from Pruning: what, when and why
- FreedirectoryPerth / WA
Professional Arboricultural Consultants (WA)
ArbWest — Arboriculture Association of Western Australia
Why this oneThe short list of WA consulting arborists, run by the state industry association, with qualifications stated — most listed firms hold AQF Level 5, the level a council or an insurer expects on a written tree report. Western Power's own powerline FAQ refers homeowners to this association. Nine firms, covering Perth, regional WA and remote areas, which is a manageable list rather than a search-results lottery.
Change this for PerthThese are consultants — people who assess trees and write reports. For climbing and pruning work you want an AQF Level 3 climbing arborist, which is a different and much larger group; ask the consultant who they would send, or use their listing as a benchmark for the credentials to demand.
Link checked 2 Aug 2026 · from Pruning: what, when and why
- Freegovernment45 minAustralian
Guide to managing the risks of tree work
Safe Work Australia
Why this oneThe national work health and safety guide for exactly this work — lopping, pruning, trimming, wood chipping, stump grinding and root pruning — and it is written for gardeners and landscapers as well as arborists. Use it to understand what a competent contractor's method statement should contain before you let anyone up a tree on your block. Published 19 March 2020, retitled and updated 12 April 2023 for consistency with the model falls guidance, and accompanied by a separate information sheet on tree and vegetation management near overhead electric lines.
Change this for PerthThis is model guidance, not law in itself. WA has adopted the model work health and safety framework, so it reflects what a WA contractor should be doing; a homeowner working on their own garden is not bound by it, but every hazard it names is still a hazard in your garden.
Link checked 2 Aug 2026 · from Pruning: what, when and why
- Freegovernment10 minPerth / WA
Dividing fences and other boundary issues
Legal Aid WA
Why this oneThe plain-English WA statement of what you may and may not do to a neighbour's tree. You may cut an overhanging branch back to the point where it enters your property and cut roots back to the boundary; you may not cut on their side of the boundary, poison the tree, or enter their land without permission. It also warns that council tree preservation orders can ban pruning or removing specified trees without a permit, which is the check most people skip.
Change this for PerthGeneral legal information, not advice on your situation. For the fate of the cuttings themselves — they belong to the tree's owner — see the Citizens Advice Bureau WA page cited in this lesson's sources.
Link checked 2 Aug 2026 · from Pruning: what, when and why
- Freegovernment20 minPerth / WA
Installing and caring for lawn in Western Australia
Turf Growers Association of WA and Water Corporation
Why this oneThe single most useful WA document on this topic, written jointly by the state's turf growers and the water utility, and the only one that publishes summer AND winter mowing heights for every species Perth actually grows. It gives soft leaf buffalo 15–20 mm every 7–10 days, couch 10–12 mm rising to 12–16 mm in winter, kikuyu 12–16 mm rising to 16–20 mm, zoysia 15–20 mm, and Queensland Blue 10–13 mm rising to 14–16 mm, plus which species need annual dethatching. It also carries the fertiliser ceiling (2 kg per 100 m² per application, no more than 1% phosphorus) and the sprinkler run times to deliver a 10 mm drink.
Change this for PerthDated December 2020, and its watering-restrictions paragraph gives Winter Sprinkler Switch-off dates that do not match the current rule. Take the dates from Water Corporation's own page — 1 June to 31 August — and use this document for the horticulture only.
Link checked 2 Aug 2026 · from Lawn care through the Perth year
- Freegovernment10 minPerth / WA
Bring your brown lawn back to life
Water Corporation
Why this oneThe closest thing there is to an official WA spring renovation sequence, and the page that dates the wetting agent programme properly: beginning of spring after aerating, beginning of summer, mid to late summer, and late May to hold the winter rain. It also gives the aeration spacing (holes at least 8 cm apart, annually on hydrophobic or compacted soil), the order — verti-mow or cut low, then aerate — and the summer water target of 10 mm twice a week.
Link checked 2 Aug 2026 · from Lawn care through the Perth year
- Freegovernment8 minPerth / WA
Maintaining a healthy lawn
Water Corporation
Why this oneThe short version of the year: mow every 7–21 days at 10–20 mm through summer depending on variety, keep the blades sharp, apply a premium wetting agent and moisture retainer three to four times a year, and spread slow-release fertiliser at no more than 2 kg per 100 m² — about an ice cream container full. It is also blunt about why the ceiling exists: whatever the lawn does not use ends up in the waterways.
Link checked 2 Aug 2026 · from Lawn care through the Perth year
- Freegovernment6 minPerth / WA
How to keep your lawn healthy during winter
Water Corporation
Why this oneThe half of the year most lawn advice ignores. It confirms that from 1 June every irrigation controller in Perth, the South West and parts of the Great Southern must be switched off or on snooze, that you should not let the grass drop below 25 mm through winter, and that a winter feed — if you do one — should carry potassium and iron rather than a big hit of nitrogen.
Link checked 2 Aug 2026 · from Lawn care through the Perth year
- Freearticle20 minPerth / WA
Fertilising lawn and garden — Fertilise Wise brochure
South East Regional Centre for Urban Landcare (SERCUL), Phosphorus Awareness Project
Why this oneThe numbers nobody else publishes for a home lawn on Perth sand: a maximum of 25 g per square metre of complete lawn fertiliser, a maximum of 12 g per square metre for a nitrogen-only product above 20% N, two applications in spring and two in early autumn (September, October, November, March, April) and an explicit instruction not to fertilise in summer or winter. It also maps Perth into five soil regions with their phosphorus retention, so you can see how fast your block leaks nutrient.
Change this for PerthWritten by a Perth catchment group whose brief is river health, so it is deliberately conservative — it is protecting the Canning and the Swan, not chasing a golf-green finish. That happens to be the right bias on deep sand, but if your lawn is genuinely starving, the Water Corporation schedule of a light feed every two months through the warm months is the other defensible position.
Link checked 2 Aug 2026 · from Lawn care through the Perth year
- Freearticle15 minPerth / WA
Fertilise Wise
SERCUL, funded by DBCA and supported by WALGA
Why this oneThe professional-grade version of the same programme, used to train local government turf managers. It sets a ceiling of 40 kg of nitrogen per hectare per application — 4 g per square metre of actual N, which is a useful cross-check on any bag you pick up — and points you at the Colwell test as the Perth standard for measuring available phosphorus before you buy anything at all.
Change this for PerthWritten for turf managers running ovals and parks, so the rates are quoted per hectare and the monitoring regime is well beyond a suburban lawn. Divide by 10,000 to get grams per square metre.
Link checked 2 Aug 2026 · from Lawn care through the Perth year
- Freedirectory15 minPerth / WA
Turf varieties
Turf Growers Association of WA
Why this oneThe WA growers' own comparison of the species sold here, and the quickest way to confirm what you are actually mowing. Each variety carries its minimum daily sun requirement — buffalo 4 hours, couch 5, kikuyu, zoysia and Queensland Blue 5–6 — plus wear tolerance and invasiveness, and couch and Queensland Blue carry their scarifying interval. For thatch tendency species by species, use the TGAWA and Water Corporation lawn brochure at the top of this list instead.
Change this for PerthIt is an industry marketing body, so every variety is described favourably. Read the sun-hours and invasiveness entries, which are factual, and discount the adjectives. It does not rate thatch for every variety — only couch and Queensland Blue carry a scarifying interval.
Link checked 2 Aug 2026 · from Lawn care through the Perth year
- Freearticle12 minOverseas — adapt it
Mowing Lawns (HGIC 1205)
Clemson University Home and Garden Information Center
Why this oneThe clearest free statement of the two rules that matter most: never remove more than one third of the leaf in a single cut, and hold a higher cut during heat, drought or shade stress because taller leaf intercepts more light and carries the plant through. It also explains why a blunt blade browns the tips and invites disease, and puts numbers on what clippings return — roughly 4% nitrogen, 0.5–1% phosphorus, 2–3% potassium.
Change this for PerthSouth Carolina, in inches. Ignore its height table — it is set for a humid subtropical climate and reads far higher than WA practice. Use the technique (one-third rule, raise under stress, sharp blade, return clippings) and take your actual heights from the TGAWA and Water Corporation figures.
Link checked 2 Aug 2026 · from Lawn care through the Perth year
- Freearticle10 minOverseas — adapt it
Aerating Lawns (HGIC 1200)
Clemson University Home and Garden Information Center
Why this oneThe best free explanation of what core aeration actually does and how to do it properly: hollow tines 6–19 mm across, 50–75 mm deep, spaced 50–75 mm, two passes at right angles, cores left on the surface to break down. It also makes the point most home guides miss — warm-season grasses should be cored while they are actively growing so the holes close over, not when the lawn is already stressed.
Change this for PerthImperial units, and its 'late spring and summer' window is for the northern hemisphere. In Perth that means September through November, before the heat arrives — which is also what Water Corporation recommends.
Link checked 2 Aug 2026 · from Lawn care through the Perth year
- Freegovernment5 minPerth / WA
Apply for a watering exemption
Water Corporation
Why this oneIf your spring renovation includes returfing a patch, this is the legal way to water it in. The exemption runs up to 42 days for lawn installed between 1 October and 31 March and up to 35 days between 1 April and 30 September, it covers garden bores as well as scheme water, and it runs from the day the lawn or garden is installed, not the day you apply — so apply on the day you lay the turf, because the clock has already started.
Change this for PerthThe extra water is charged to your account and counts against your billing-year usage, so it can push you into a higher tier. Normal roster rules snap back the day it expires, and you have to reprogram the controller yourself.
Link checked 2 Aug 2026 · from Lawn care through the Perth year
- Freeapp5 min to submit a reportPerth / WA
MyPestGuide Reporter
Department of Primary Industries and Regional Development (DPIRD)
Why this oneThe free way to get a WA government entomologist to look at your problem. You photograph the pest or the damage, the app attaches GPS and your description, and DPIRD's experts investigate, identify it and reply directly to your device. There is a web version if you do not want the app. For a gardener this is a better route than paying a pest controller to guess, and it is the department's own nominated reporting channel for suspect detections.
Change this for PerthReports go to a queue, so this is not a same-day service. Photograph the insect itself as well as the damage — damage alone is rarely diagnostic. The page does not publish a turnaround time; if the problem is a suspected polyphagous shot-hole borer, phone PaDIS on (08) 9368 3080 as well as reporting through the app.
Link checked 2 Aug 2026 · from WA pests and diseases: black beetle, couch mite, millipedes and dieback
- Freegovernment20 minPerth / WA
Polyphagous shot-hole borer
Department of Primary Industries and Regional Development (DPIRD)
Why this oneThe only pest in this lesson that carries a legal duty on you, and this is the regulator's own page. It sets out that the national response has moved from eradication to long-term management, that a Quarantine Area Notice now covers the entire Perth metropolitan area, what you may and may not move out of the zone, the symptoms to look for — 1 mm shot-holes, galleries, dieback, staining and lesions, frass and gumming — and the obligation under the Biosecurity and Agriculture Management Act 2007 to report a find or a suspicion.
Change this for PerthThe page was last updated 12 November 2025 and the response is actively changing. Confirm the current zone boundaries and movement conditions on this page before you prune, chip or dispose of anything from a host tree — the rules that applied last year are not necessarily the rules today.
Link checked 2 Aug 2026 · from WA pests and diseases: black beetle, couch mite, millipedes and dieback
- Freegovernment15 minPerth / WA
Ants — invasive and pest species
Department of Primary Industries and Regional Development (DPIRD)
Why this oneThe identification key that stops you spending money on the wrong ant. It gives Argentine ants as slender dark brown ants 2.6 to 3.2 mm long that form continuous well-defined trails of slow-moving ants and give off a slight greasy, musty odour when crushed, and it separates them from coastal brown ant, Singapore ant, pennant ant and the high-risk exotics such as red imported fire ant that must be reported. DPIRD states plainly that the Argentine ant is the most difficult common pest ant in WA to control because it recolonises quickly.
Change this for PerthThe page is an identification and biosecurity resource, not a treatment guide. It does not recommend specific baits or products for domestic use.
Link checked 2 Aug 2026 · from WA pests and diseases: black beetle, couch mite, millipedes and dieback
- Freegovernment10 minPerth / WA
Portuguese millipedes, Ommatoiulus moreletii (DPIRD factsheet)
Department of Primary Industries and Regional Development (DPIRD)
Why this oneTwo pages that reset your expectations before you spend anything. It records that the species was already well established when first found at Roleystone in 1986, that outbreaks are short-lived and tied to autumn and spring rains, and that populations peak in the first few years after arriving in an area then decline, probably because a naturally occurring parasitic nematode catches up with them. Its management advice is deliberately non-chemical first: turn off unnecessary outdoor lighting, set light traps away from the building, fit door seals and dust strips, and use two or more methods together.
Change this for PerthThis is the genuine DPIRD factsheet from October 2017, re-hosted by the City of Cockburn — DPIRD's own biosecurity factsheet library no longer carries a Portuguese millipede sheet, so the council copy is the accessible version. The advice is still current, but treat the 2017 date as a reason to phone PaDIS if your situation is unusual.
Link checked 2 Aug 2026 · from WA pests and diseases: black beetle, couch mite, millipedes and dieback
- Freearticle15 minAustralian
African black beetle — PestNote
Cesar Australia
Why this oneThe clearest free Australian source on the life cycle, which is what determines when treatment can possibly work. Adults are shiny black and 12 to 14 mm; larvae are white C-shaped scarab grubs reaching 25 to 30 mm with a yellow-brown head capsule; there is generally one generation a year with new adults emerging between late December and early February. It also names the two distinct kinds of damage — adults chewing stems at or below soil level, and third-instar larvae severing roots until turf can be rolled back like a carpet.
Change this for PerthWritten by an agricultural research organisation for broadacre and pasture growers, so the thresholds (around five beetles per square metre) and the seed-treatment control options are not lawn advice. Take the biology and the damage description and ignore the crop chemistry.
Link checked 2 Aug 2026 · from WA pests and diseases: black beetle, couch mite, millipedes and dieback
- Freearticle12 minAustralian
Armyworm — PestNote
Cesar Australia
Why this oneGives you the one identification feature that actually settles what is eating your lawn: three parallel white longitudinal stripes running back from the collar behind the head, present even when the body stripes are faint. It also covers the moth (grey-brown, 40 to 45 mm wingspan, most active on warm humid evenings in spring and autumn), egg batches of 5 to 30, hatching in 6 to 20 days, and confirms that Bacillus thuringiensis works and must be sprayed out within two hours of mixing.
Change this for PerthAimed at cereal and pasture growers, so the per-square-metre thresholds are yield thresholds for crops, not lawn thresholds. Lawn armyworm in Perth is usually a different Spodoptera species to the cereal armyworms described here, but the collar stripes, the night feeding and the Bt control all transfer.
Link checked 2 Aug 2026 · from WA pests and diseases: black beetle, couch mite, millipedes and dieback
- Freearticle10 minAustralian
Fighting the couch mite this summer
TurfBreed
Why this oneThe most specific free Australian write-up on a pest almost nobody diagnoses correctly. It states that the mite is only visible with at least a 10x hand lens, that it is creamy white to yellow with four legs near the head end, that its injected saliva shortens internodes and swells leaf sheaths to give the witches' broom tufting, that damage first appears in spring and browns off over summer, and that the life cycle runs 7 to 10 days so populations explode in a dry summer. It names the three registered chemical groups — abamectin, clofentezine and diafenthiuron.
Change this for PerthTurfBreed is a turf breeding and licensing business, so read the variety-tolerance section as having a commercial interest. Miticides in those groups are largely professional turf products; check any product you buy against APVMA PubCRIS for home lawn use before applying it.
Link checked 2 Aug 2026 · from WA pests and diseases: black beetle, couch mite, millipedes and dieback
- Freearticle15 minPerth / WA
Phytophthora Dieback in Bushland — small landholder information sheet
Perth NRM and the Dieback Working Group
Why this oneTwo pages that contain everything a property owner actually needs to act on. It gives the diagnostic pattern (complete deaths rather than dying limbs, and a chronology of deaths with the freshest next to healthy bush), the indicator species to watch — grass trees, Banksia, Isopogon, Leucopogon and jarrah — the species that are not susceptible, the exact field hygiene recipe of 70% methylated spirits to 30% water after physically brushing dirt off, and the soil sampling method and postal address for laboratory confirmation.
Link checked 2 Aug 2026 · from WA pests and diseases: black beetle, couch mite, millipedes and dieback
- Freebook2 hoursPerth / WA
Managing Phytophthora Dieback in Bushland (handbook, version 7.1)
Dieback Working Group
Why this oneThe long-form version of the same material, from the WA body that has specialised in this disease since 1996. Version 7.1 was released on 6 September 2024, so it is current, and it is the reference to read if your block backs onto bushland, sits on the scarp, or you are bringing in fill, gravel or mulch from an unknown source. Free PDF, no registration.
Change this for PerthWritten for bushland managers and community groups rather than gardeners, so the mapping, interpretation and access-control sections are beyond a suburban block. The hygiene and materials chapters are the parts that apply to you.
Link checked 2 Aug 2026 · from WA pests and diseases: black beetle, couch mite, millipedes and dieback
- Paid · Published in the Vegetation Health Service fee schedule — confirm the current figure before sending samplestoolPerth / WA
Vegetation Health Service
Department of Biodiversity, Conservation and Attractions (DBCA)
Why this oneThe state's dedicated Phytophthora diagnostic laboratory, at DBCA headquarters at 17 Dick Perry Avenue, Kensington. It tests soil, plant material and water by baiting with susceptible plant leaves and then confirming by microscopy or DNA sequencing, which is the only way to turn a suspicion into a diagnosis. The page carries the sample information sheet and the sample collection guidelines you must follow for the result to mean anything.
Change this for PerthA negative result does not prove the site is clean — it proves the pathogen was not recovered from that sample. DBCA itself recommends engaging a registered Phytophthora Dieback Interpreter rather than relying on sampling alone. Fees are published in a separate schedule and change each financial year, so confirm the current price before you post anything.
Link checked 2 Aug 2026 · from WA pests and diseases: black beetle, couch mite, millipedes and dieback
- Paid · $280 + GST standard, $170 + GST for students and community group memberscoursePerth / WA
DWG Green Card Training (dieback biosecurity awareness)
Dieback Working Group
Why this oneThe recognised WA qualification in dieback hygiene, covering classroom theory, practical vehicle inspection and clean-down, and an assessment, with the card valid for three years. Worth the money if you are doing earthworks, moving fill, or working anywhere near bushland; if you just want the household version of the same knowledge, the free Perth NRM information sheet above covers the practical hygiene without the card.
Change this for PerthDelivered in person by registered trainers, not online, and commercial rates vary by trainer. This is aimed at contractors and land managers rather than home gardeners.
Link checked 2 Aug 2026 · from WA pests and diseases: black beetle, couch mite, millipedes and dieback
- Freetool5 min per productAustralian
PubCRIS — public chemical registration information system
Australian Pesticides and Veterinary Medicines Authority (APVMA)
Why this oneThe national register of every agricultural and veterinary chemical product approved for sale in Australia, searchable free by product name, active constituent, pest and host. Before you buy anything, this tells you whether that product is actually registered for that pest on that plant — which is the difference between a legal, effective treatment and an expensive guess. It also lets you find every product containing a given active, so you can price-compare instead of paying brand premium.
Change this for PerthNational, not WA-specific, and it tells you what is registered rather than what is wise. Registration is not a recommendation, and a product being legal to use does not make it the least-toxic option available to you.
Link checked 2 Aug 2026 · from WA pests and diseases: black beetle, couch mite, millipedes and dieback
- Freegovernment15 minPerth / WA
Declared weeds in Western Australia
Department of Primary Industries and Regional Development (DPIRD)
Why this oneThe page that turns a weed from a nuisance into a legal duty. It sets out the three control categories under the Biosecurity and Agriculture Management Regulations 2013 — C1 exclusion, C2 eradication, C3 management — and states plainly that where a plant is declared, landholders (owners and occupiers) and other people are obliged to control that plant on their properties. It also links the individual biosecurity alerts for the species DPIRD most wants reported, including pokeweed, boneseed and praxelis.
Link checked 2 Aug 2026 · from Weeds in WA gardens
- Freetool5 min per plantPerth / WA
Western Australian Organism List (WAOL)
Department of Primary Industries and Regional Development (DPIRD)
Why this oneThis is the live legal register, not a brochure, and it is the only correct way to answer 'is this thing on my block declared?'. Search by common or scientific name across 56,419 organisms and it returns declared pest status, the control category (C1, C2, C3 or unassigned), keeping category, and — critically — how that status varies by local government area, because a plant can be C3 in one shire and unassigned in the next. Check it rather than trusting a printed list, because declarations change.
Link checked 2 Aug 2026 · from Weeds in WA gardens
- Freearticle20 minPerth / WA
Garden plants and bushland invaders
City of Stirling
Why this oneAn eight-page illustrated field guide to the exact plants that recur in suburban Perth gardens and then escape — arum lily, freesia, harlequin flower, black flag, cape tulip, gazania, veldt daisy, pretty betsy, morning glory, lantana, Japanese pepper, pampas grass, onion weed, lachenalia and the cultivated Geraldton wax. Each entry gives a short identification note and a specific control measure, and most of them come back to the same instruction: remove before seed set and get every bulb or corm out, because they reshoot.
Change this for PerthWritten for the City of Stirling's coastal and Swan Coastal Plain suburbs. The species list holds across metropolitan Perth, but it is an identification and awareness guide, not a legal register — cross-check declared status on WAOL.
Link checked 2 Aug 2026 · from Weeds in WA gardens
- Freebook116 pagesPerth / WA
Bushland Weeds: a practical guide to their management
Environmental Weeds Action Network, hosted by the Department of Biodiversity, Conservation and Attractions
Why this oneThe single best free document on why weed control in Perth fails, with case studies from the Swan Coastal Plain. Separate chapters on grass weeds and on corms, bulbs and tubers explain the life-cycle timing that decides everything: couch and kikuyu are warm-season C4 grasses and must be treated when actively growing in late spring and summer; hand-pulling oxalis after bulbils have formed spreads it; removing gladiolus flowers as they open produces a larger corm next year. It also documents the buried conveyor-belt barrier built against couch at Blue Gum Lake in the City of Melville.
Change this for PerthPublished around 2002 and written for bushland restoration, so the herbicide product names, registrations and permit references are out of date — check current registrations on the APVMA and read the label. The weed biology, the timing and the case studies are still the best material available for Perth.
Link checked 2 Aug 2026 · from Weeds in WA gardens
- Freearticle20 minAustralian
Herbicides: knowing when and how to use them
CRC for Australian Weed Management, hosted by the Department of Biodiversity, Conservation and Attractions
Why this oneSeven pages that explain the three things a homeowner usually gets wrong: the difference between contact, translocated and residual herbicides (you need a translocated one for anything perennial, because contact herbicides do not reach the roots); the difference between selective and non-selective; and the fact that it is illegal to disregard label instructions and you must read all of them, not just the rate. It ends with a one-page questionnaire that forces you to describe your target weed properly before you buy anything.
Change this for PerthSome named products and permit references date from the mid-2000s. Treat the chemistry and the decision framework as current and verify any specific product registration before use.
Link checked 2 Aug 2026 · from Weeds in WA gardens
- Freegovernment10 minPerth / WA
Using pesticides safely
Department of Health, Western Australia
Why this oneThe WA health regulator's plain statement of the homeowner's obligations: work out whether a pesticide is needed at all, read the label before you use it, wear the protective equipment the label specifies, and understand that it is illegal to apply pesticides in a manner not indicated on the label. It also covers spray drift on windy days, granule risks to small children and birds, and the signage rules under the Health (Pesticides) Regulations 2011 for spraying in public places.
Link checked 2 Aug 2026 · from Weeds in WA gardens
- Freetool5 min per plantPerth / WA
FloraBase — the Western Australian Flora
Western Australian Herbarium, Department of Biodiversity, Conservation and Attractions
Why this oneThe state herbarium's own database, and the fastest way to confirm what you are actually looking at before you spend money killing it. Search a name and the profile tells you whether the species is alien or native to WA, which IBRA regions and local government areas it has been recorded in, and for weeds a management calendar giving the optimum treatment months — for bridal creeper it names July and August, and for narrow-leaf cotton bush September to December with the instruction to hand-remove before fruit set.
Change this for PerthProfiles are inconsistent about legal status. The arum lily profile states it is a declared pest under s22(2) of the BAM Act 2007, but other weed profiles omit declared status entirely — so use FloraBase for identification and biology, and WAOL for the legal answer.
Link checked 2 Aug 2026 · from Weeds in WA gardens
- Freegovernment2 minPerth / WA
Weeds — what bin does it go in?
Watch Your Waste, Government of Western Australia
Why this oneShort and settles a question people get wrong constantly. Weeds go in the lime-green-topped FOGO bin, because the commercial composting process reaches temperatures that destroy the seed — which a backyard compost heap generally does not. This is the difference between disposing of your weeds and redistributing them through your own garden next season.
Change this for PerthThe page does not address declared pests, bulbs or material carrying ripe seed. Bag ripe seed heads and fruit separately before they go in the bin, and for a declared pest ask your local government or DPIRD before you move the material at all.
Link checked 2 Aug 2026 · from Weeds in WA gardens
- Freedirectory10 minPerth / WA
Perth environmental weeds database
Urban Bushland Council WA
Why this oneA searchable Perth weed database you can filter by plant type, flowering month and flower colour, which is how a non-expert actually identifies something — you rarely know the name, but you can see that it is a bulb with purple flowers in September. Entries give common and scientific names, management notes and treatment windows; the arum lily entry states it is a declared plant with all movement prohibited and gives an optimum herbicide window of July to September.
Change this for PerthA community advocacy organisation rather than a regulator. Good for identification and timing; confirm any legal status on WAOL and any chemical recommendation against the current product label.
Link checked 2 Aug 2026 · from Weeds in WA gardens
- Freegovernment20 minPerth / WA
Polyphagous shot-hole borer
Department of Primary Industries and Regional Development (DPIRD)
Why this oneThe single biggest reason established Perth trees are being removed right now, and the page that tells you what you are legally allowed to do with the wood afterwards. It confirms the national response has moved from eradication to a Transition to Management plan, that the quarantine area covers the entire Perth metropolitan area, and that wood may only leave the zone if chipped to 2.5 cm or smaller. It also gives the reporting route — the MyPestGuide Reporter app or PaDIS on (08) 9368 3080 — and the practical tip of putting a ballpoint pen or ruler beside the bore holes in your photos so the hole size can be assessed.
Change this for PerthThis is a live response and the zone boundaries and conditions change. Read the current Quarantine Area Notice before you move any wood or green waste, not the version you remember from last year.
Link checked 2 Aug 2026 · from When to renovate, replace and rethink
- Freegovernment10 minPerth / WA
Selecting the right tree
Water Corporation
Why this oneThe utility's own view of which trees cause it grief, which is a more honest guide to root behaviour than a nursery label. It grades species by root invasiveness, warns that vigorous roots enter pipes through small cracks and that repairs mean replacing sections of pipe, and states plainly that damage or interference with a Water Corporation underground asset may result in a fine. It also confirms you must seek approval for works within 10 metres of their assets.
Change this for PerthThe 2.7 metres from the boundary line and 0.5 metres from water assets figures on this page are written for street and verge trees planted by local government, not for trees on your own block. Treat them as a sanity check on how close you are planting to a service, not as a private-property rule.
Link checked 2 Aug 2026 · from When to renovate, replace and rethink
- Freetool20 minPerth / WA
Waterwise plants directory
Water Corporation
Why this oneSearch by suburb rather than by climate zone, which is the right granularity for Perth. You can filter by origin (WA native, Australian native, exotic), growth habit (tree, shrub, groundcover, climber, succulent, strappy), garden type including coastal and verge, and flower colour. The filter that saves the most wasted time is availability — limited, none, or readily available — so you find out before you fall in love with something no Perth nursery stocks.
Link checked 2 Aug 2026 · from When to renovate, replace and rethink
- Freegovernment10 minPerth / WA
Treebate
Department of Water and Environmental Regulation
Why this oneA state rebate of up to $150 per person for one native tree bought from a local nursery and planted on private property, where the species must have a canopy reaching at least three metres at maturity. Announced in January 2025 and funded to run four years for up to 10,000 Western Australians a year. If your annual review says a tree has to be replaced, this covers a meaningful share of a decent-sized advanced specimen.
Change this for PerthChecked on 2 August 2026: Round 1 opened on 28 July 2025 and Round 2 is listed as coming soon, with the funding counter showing about 90% of current funds used. The rebate is claimed after you buy and plant, so confirm a round is actually open before you spend the money.
Link checked 2 Aug 2026 · from When to renovate, replace and rethink
- Freegovernment10 minPerth / WA
Trees on private property
City of South Perth
Why this oneA worked example of the rule most Perth owners do not know exists. Under Local Planning Policy 3.2 you need development approval before removing or damaging a Regulated Tree on private land, defined as any living tree 8.0 metres or more high, or with an average canopy diameter of at least 6.0 metres, or a trunk circumference of at least 1.5 metres. Maintenance pruning such as deadwooding or minor thinning is excluded. It also states the maximum penalties for a breach under the Planning and Development Act 2005 — currently $200,000 for a natural person.
Change this for PerthThis is one council's policy and it binds nobody outside the City of South Perth. Perth local governments vary enormously: some have no private tree controls at all, others run significant tree registers. Read your own council's local planning policy before you book a removal, and get the answer in writing.
Link checked 2 Aug 2026 · from When to renovate, replace and rethink
- FreedirectoryAustralian
Find an Arborist
Institute of Australian Consulting Arboriculturists
Why this oneThe searchable directory of accredited consulting arborists, filterable by state including Western Australia and by more than 25 specialisations — tree risk assessment under several methodologies, arboricultural impact assessment, tree valuation, and pest and disease work. When your annual review turns up a large tree you are not sure about, this is how you find someone whose job is writing the assessment rather than selling you the removal.
Change this for PerthIACA lists consulting arborists, who assess and report. That is deliberately not the same trade as the crew who climb and cut. For the physical work you separately want a contractor with a qualified climber, public liability cover and, near powerlines, the right accreditation.
Link checked 2 Aug 2026 · from When to renovate, replace and rethink
- Freearticle40 minOverseas — adapt it
Operation and Maintenance Guide for Interlocking Concrete Pavement (PAV-TEC-006)
Concrete Masonry and Hardscapes Association
Why this oneThe clearest free document on the exact distinction this lesson turns on. It separates eleven structural distresses catalogued under ASTM E2840 — rutting, faulting, heave, horizontal creep, depressions, edge restraint failure, joint sand loss and pumping, excessive joint width, damaged, missing and patched units — from five purely aesthetic ones, and says outright that efflorescence is not structural. It then gives the full lift-and-relay procedure: disassembly, subgrade compaction, base in lifts, density verification, screeded bedding sand, reinstatement and re-sanding.
Change this for PerthNorth American. Skip the freeze-thaw material entirely. Substitute compacted crushed limestone for the crushed aggregate base it specifies, since that is the Perth standard, and read its 4 to 6 inch lifts as roughly 100 to 150 mm. Base failure here is almost always poor compaction, an uncompacted service trench, or no base under the sand at all.
Link checked 2 Aug 2026 · from When to renovate, replace and rethink
- Freearticle15 minAustralian
Natural Durability Ratings
WoodSolutions / Forest and Wood Products Australia
Why this oneThe numbers that tell you whether your deck is due or merely dirty. It sets out the four AS 5604 durability classes with expected service life for heartwood: Class 1 more than 40 years above ground and more than 25 in ground, Class 2 15 to 40 above and 15 to 25 in ground, Class 3 seven to 15 above and five to 15 in ground, Class 4 under seven years above ground. Jarrah is Class 2 and termite resistant; spotted gum and ironbark are Class 1. Put your build date against the class and you know whether to budget for boards or for the whole frame.
Change this for PerthThe ratings apply to heartwood only — sapwood in the same board has none of that durability. Perth's dry summers are relatively kind to timber above ground, so decks here usually fail at the points that stay damp: bearers in ground contact, the joist under a planter, the edge against a wet lawn. Durability class is also not a termite management plan.
Link checked 2 Aug 2026 · from When to renovate, replace and rethink
- Freegovernment15 minPerth / WA
Managing crystalline silica dust in the workplace
WorkSafe WA
Why this oneRelaying pavers, cutting limestone blocks and breaking up concrete all generate respirable crystalline silica, and this is the regulator's statement of what control looks like. It confirms that processing a crystalline silica substance must be controlled regardless of whether the work is assessed as high risk, sets the hierarchy — substitute a lower-silica material, then fixed or on-tool extraction, then wet cutting, with PPE only as a supplement — and requires a written silica risk control plan accessible to workers before high-risk processing starts.
Change this for PerthThese duties bind a PCBU, meaning a business. A homeowner cutting their own pavers is not caught by them. The dust is identical either way, so wet-cut or use on-tool extraction and wear a properly fitted P2 respirator regardless of who is holding the saw. Page last updated 29 April 2025.
Link checked 2 Aug 2026 · from When to renovate, replace and rethink