For places like Sydney, Perth, Central Coast NSW, Mandurah. Timing is typical for the zone; check your own lawn before you act.
Jobs for September
First feed of the season
Fertilise
Once the lawn is clearly growing again, give it its first feed at the rate on the label. Water granules in straight away unless the label says otherwise, and sweep any off paths and driveways.
If the lawn was left long over winter, bring it down over several mows rather than one hard cut. Scalping a lawn as it wakes up leaves it yellow or brown for weeks.
Bindii forms its prickly burrs in spring. Dig out plants or spot treat them with a herbicide whose label lists bindii and your grass type, before the burrs appear.
Look for brown patches where the turf lifts like carpet, and birds digging in the lawn. Lift a section of turf at the edge of a patch and check for C-shaped, creamy white grubs in the root zone.
Run each sprinkler zone, fix leaks and broken heads, and do a catch-cup test to see how much water each zone delivers and how evenly. Then set run times with the Sprinkler Run-Time Calculator.
Mow often enough that you never take off more than a third of the leaf at once. Keep shaded areas a little higher than sunny ones, and keep the blade sharp so it cuts cleanly.
Roughly circular yellow or brown patches in mild, humid weather can be brown patch. Water in the morning so leaves dry during the day, and avoid overwatering.
Water rules can change with the season and with dam levels. Check your water authority's current rules before you set your controller for the warmer months.
A simple pH test before the growing season tells you whether your soil suits the grass. Follow the kit's instructions, and test a few spots across the lawn.
Wetting agent before summer, if water isn't soaking in
Renovate while the lawn is growing strongly
Seasonal lawn notes
What your lawn needs, when it needs it
A short email when the season turns: what to do this month in your climate, which weeds are about to germinate, and new answers worth reading.
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