Jobs for the garden in May

May is a month of seasonal change in Australian gardens. In southern regions, autumn is settling in and winter is just around the corner. In northern regions, the wet season is easing and the dry season is becoming the main growing window. Across the country, May is a time to tidy, feed, plant, protect and reset.

The most useful jobs for the garden in May depend on your climate zone. Some gardeners are protecting crops from frost, while others are rebuilding beds after tropical rain. Some are harvesting the last of the summer vegetables, while others are planting the first serious dry-season crops.

Here’s what to focus on in your patch this month.

Cool Temperate

Cool temperate gardens are slowing down, but there is still plenty to do. The main goal is to help young winter crops establish before the coldest weather arrives.

Clear finished summer crops from beds and remove any diseased foliage. Healthy plant material can go into the compost, but anything with serious fungal disease should be disposed of away from the veg patch.

Protect young seedlings from frost. Cloches, frost cloth, mini tunnels and sheltered positions can all help tender greens and brassicas survive sudden cold snaps.

Plant garlic, broad beans and winter leafy greens into soil improved with compost. These are dependable cool-season choices and suit the slower pace of late autumn.

Collect fallen leaves and turn them into leaf mould, compost or mulch. Autumn leaves are a brilliant free garden resource.

Check brassicas for caterpillars, aphids and damaged leaves. Remove pests by hand where practical and keep plants well spaced for airflow.

Warm Temperate

Warm temperate gardens are in a productive autumn phase. May is a great time to transition beds from summer crops into winter staples.

Top up mulch around brassicas, leafy greens and root crops. Mulch helps stabilise soil moisture and protects soil life as temperatures drop.

Remove tired tomatoes, cucumbers, beans and zucchinis once they have finished producing. This clears space for peas, broad beans, greens and brassicas.

Sow peas and broad beans before the soil gets too cold. Add supports for climbing peas early so you don’t disturb roots later.

Feed young winter seedlings with a gentle liquid fertiliser. This keeps them growing strongly before winter slows everything down.

Watch for snails and slugs after rain. They can quickly damage soft seedlings, especially lettuce, Asian greens and brassicas.

Mediterranean

Mediterranean gardens often come alive in May. Cooler weather and more reliable rain make this a key planting and soil-building month.

Plant winter vegetables while the soil still holds autumn warmth. Brassicas, peas, broad beans, leafy greens and root crops can all establish well now.

Refresh beds with compost before planting. Mediterranean summers can be tough on soil, so May is a good time to rebuild organic matter.

Adjust watering as rain increases. Seedlings still need consistent moisture, but established beds may need less irrigation than they did in early autumn.

Prune back spent summer growth and tidy paths. Removing dead or overcrowded material helps reduce pest and disease pressure as conditions become damper.

Protect young brassicas from caterpillars if cabbage white butterflies are still around. Netting is often the simplest low-effort solution.

Arid

Arid gardens benefit from May’s milder conditions, but gardeners still need to manage dryness and sharp temperature changes.

Plant cool-season crops while conditions are favourable. Leafy greens, brassicas, peas, broad beans and root crops can all be productive now.

Water deeply in the morning. This gives plants access to moisture during the day while reducing the risk of cold, wet soil overnight.

Use mulch around seedlings once they are established. Mulch helps reduce evaporation and protects roots from hot days and cold nights.

Ease off shade cloth where the harshest heat has passed. Many winter crops need as much light as possible through the cooler months.

Check soft new growth for aphids. Brassicas, peas and leafy greens can attract pests quickly when conditions are mild.

Savannah

Savannah gardens move into one of their most productive periods in May. The wet season is fading, humidity is easing, and dry-season planting can begin in earnest.

Plant dry-season vegetables including tomatoes, leafy greens, herbs, cucumbers and brassicas. This is a key growing window for many crops that struggle during the wet.

Rebuild soil after heavy rain. Add compost, aged manure or organic fertiliser to replace nutrients that may have leached away.

Keep watering consistent as dry conditions increase. Young seedlings need steady moisture while roots establish.

Prune off storm-damaged or diseased growth from perennial herbs and tropical food plants. This improves airflow and encourages healthy regrowth.

Watch tomatoes and cucumbers for mildew. Good spacing, morning watering and removing affected leaves can help keep disease under control.

Subtropical

Subtropical gardens are in a useful transition period during May. The weather is mild enough for cool-season crops, but many warm-season plants may still be producing.

Clear and replant beds gradually. Remove exhausted summer crops and replace them with leafy greens, roots, peas and brassicas.

Harvest basil, chillies, eggplant and late tomatoes before cooler weather slows them down. Preserve or share any excess harvests.

Plant peas and brassicas in sunny positions. These crops enjoy the cooler conditions but still need good light and drainage.

Mulch lightly rather than heavily in damp spots. In humid areas, too much mulch around stems can encourage fungal problems.

Check leafy crops for caterpillars, aphids and leaf spots. Early action is much easier than rescuing stressed plants later.

Tropical

Tropical gardens become much easier to manage in May. As humidity eases, gardeners can plant a wider range of vegetables and herbs with fewer disease issues.

Start dry-season vegetables now. Tomatoes, capsicum, chilli, eggplant, cucumbers, beans, Asian greens and herbs can all perform well in the right spot.

Add compost to beds depleted by wet-season rain. Tropical soils often need regular organic matter to stay productive.

Keep seedlings watered as the dry season develops. Raised beds and pots can dry out faster than expected once rain becomes less frequent.

Prune back rampant herbs and remove mouldy or overcrowded growth. This helps improve airflow and keeps edible plants healthy.

Water in the morning where possible. Wet leaves overnight can encourage fungal disease, especially in dense plantings.

May is a reset month

The best May gardening jobs are practical ones: clear what’s finished, protect what’s vulnerable, feed the soil, plant what suits your climate and stay ahead of pests. A little attention now can set your garden up for months of harvests.

Grow It Local+ can help you stay on track with seasonal seeds, monthly workshops and friendly horticultural support tailored to the way Australians actually grow food at home.