When to plant Cabbage in Arid Australia

Arid zone — applies to Alice Springs, Mildura, Broken Hill, Kalgoorlie, Port Augusta and similar areas. Growing elsewhere? Temperate · Cool · Subtropical · Tropical.

In the arid zone, cabbage sows direct from January right through to October, 6 mm deep with 40–50 cm between plants. It is one of the more forgiving brassicas for dry-country gardens: hardy through the coldest inland nights, quick out of the ground at 6–12 days, and ready to cut in 60–120 days depending on variety and season. The sweet spot is late summer to autumn sowing — heads that mature through the cold months around Alice Springs or Port Augusta come out denser and sweeter — while spring sowings race the heat and need more nursing.

Sowing calendar — arid zone

Green months are your sowing window: January to October.

Growing notes

Water rhythm makes or breaks cabbage in arid country, and the failure mode is specific: heads that split. A cabbage left thirsty through a hot Mildura week, then flooded when the gardener catches up, takes up water faster than the head can expand and cracks open. Keep 75 mm of mulch over the root zone and water deeply on a fixed schedule — two or three soakings a week in warm months — so moisture never swings between extremes. Once heads feel firm, ease the water back slightly rather than stopping.

Summer-sown crops need 30% shade cloth through establishment and benefit from it until autumn breaks the heat. The broad outer leaves transpire heavily and will wilt dramatically on a 40 °C afternoon even in moist soil, which looks alarming but is survivable if the roots are deep and mulched. Winter is the easy season — frost improves flavour, and the plant is unbothered by cold desert nights.

Cabbage white butterflies treat an unprotected cabbage bed as a nursery, and in isolated arid towns your patch may be the only green brassica for kilometres, which concentrates the pressure. Exclusion netting from sowing is close to mandatory; just check it never rests directly on the leaves, or the butterflies will lay through it.

Cabbage at a glance

Companion planting

Grows well with

Marigold: Deters cabbage white butterfly

Nasturtiums: Trap crop lures cabbage white away from brassica

Marigold: Deters cabbage moth and aphids

Keep away from

Tomatoes: Brassicas inhibit tomato growth

Tomatoes: Brassicas and tomatoes inhibit each other

Strawberries: Both suffer when grown together; strawberries stunted

Common questions

When can I plant cabbage in the arid zone?

Sow direct any time from January to October. Late summer and autumn sowings are easiest, maturing their heads through the cool months.

Why are my cabbages splitting?

Splitting comes from uneven watering — a dry spell followed by a heavy soak makes the head expand faster than its outer leaves can stretch. Mulch well and water deeply on a consistent schedule.

Does cabbage cope with frost in Alice Springs?

Yes. Cabbage is fully hardy, and heads maturing through Alice Springs' frosty winter nights are typically denser and sweeter than warm-season ones.

How do I keep cabbage white butterfly off my cabbages?

Fine exclusion netting installed the day you sow is the most reliable answer. Keep the netting lifted off the leaves so butterflies cannot lay eggs through it.

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