Preparing your NSW garden for winter: a late-autumn checklist

The last week of autumn is the quietest, most useful week of the year in an NSW garden. The soil is still warm enough to work with, the rains are easing, and the plants haven't yet pulled their energy back into dormancy. What you do now decides whether June arrives as a rest or a problem. This is the checklist we run with our own clients across Sydney, the Central Coast and the Hunter — eight small jobs, done once, that hold the garden steady until spring. ## 1. Raise your mower one notch, not two The instinct in cooler months is to cut the lawn short before winter. It's the wrong instinct. Lawns in coastal NSW — couch, kikuyu, buffalo — slow their growth from late May but don't stop. A slightly longer blade (around 35–45 mm for buffalo, 25–30 mm for couch and kikuyu) shades the crown, holds soil warmth, and keeps winter weeds from finding light. Cut once more this week, then leave it. ## 2. Sort your green waste before the rain settles in Autumn leaf litter looks tidy on a lawn for about three days. After that it mats, traps moisture, and quietly kills the turf underneath. Rake or blow leaves off lawn surfaces and into beds where they'll break down as free mulch — or remove them entirely if your beds are already mulched to depth. If you've been deferring a clean-up, this is the week. After the first proper winter rain, wet leaves become a different job. ## 3. Top up mulch to 50–75 mm A thin mulch layer is worse than no mulch — it dries fast, locks out rain, and gives weed seeds a perfect bed. Aim for 50–75 mm of coarse organic mulch (sugar cane, lucerne, or aged hardwood chip) across all beds, kept clear of plant stems by a hand's width. Mulch laid now will be soaked in by mid-June and protecting roots from cold soil right when you need it. ## 4. Prune what should be pruned. Leave what shouldn't. Now is the right time to prune: - **Deciduous fruit trees** (apple, pear, stone fruit) once leaves have dropped - **Roses** — a light tidy now, hard prune in July - **Hedges of evergreen species** (lilly pilly, photinia, murraya) for shape, not size - **Overgrown natives** that have finished flowering Leave alone, for now: - Anything still flowering — banksia, grevillea, hardenbergia - Frost-tender species (cut wood invites frost damage at the cut) - Camellias and azaleas in bud If you're unsure whether a plant is finished for the year, wait. A late prune costs you next season's flowers. ## 5. Lift, divide, and replant perennials The window is closing. Salvias, dianellas, lomandras, agapanthus and clumping natives that have outgrown their space can still be lifted and divided this week, while the soil is warm enough for roots to settle before dormancy. Water them in well and they'll wake up in August established, not recovering. ## 6. Put frost cover where it matters Sydney coastal suburbs rarely frost. The Hunter, the upper Blue Mountains, and parts of the Central Coast hinterland do — often the first week of June. If you have citrus in pots, young natives, or anything tropical in the ground, have hessian or frost cloth ready before you need it. Plastic sheeting is worse than nothing; it traps moisture against leaves and burns them. ## 7. Service the tools you'll need in spring Mowers, line trimmers, secateurs, and shears all do better stored clean and sharp. Blades sharpened in May cut cleanly in September. Blades left blunt tear stems and let disease in. If you don't service your own equipment, book it in now — workshops are quiet in winter and busy from August. ## 8. Walk the garden once, slowly This is the most underrated job on the list. Once a week, walk every bed. Look for: - Drainage that's pooling where it didn't before - Mulch that's washed thin - Stakes loosened by wind - Possum or rodent activity near new plantings - Any plant that looks unhappy without an obvious reason Small problems noticed in May are small jobs in June. The same problems found in August are spring's biggest setback. --- ## What we'd skip A few things we routinely tell clients **not** to do in late autumn: - **Don't fertilise lawns now.** It pushes soft growth into the coldest months and invites fungal disease. - **Don't dig over empty vegetable beds.** Cover them with mulch or a cover crop instead — winter rains will compact bare soil. - **Don't replace plants that "look dead."** Many natives and perennials look terrible in late autumn and recover entirely by September. Wait. --- If you'd rather hand the list to someone else, this is exactly the brief we cover in our **seasonal cleanup** visits — usually one half-day, written quote first, no upsell. Tell us your postcode and we'll come back within the day with a price.