When to plant Peas in Arid Australia

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

Peas go in direct from March to August in the arid zone, sown deep — 30–50 mm — at 15–20 cm spacings in rows 50 cm apart. This is the classic dry-country winter legume: sow into autumn's cooling soil, let plants build their frame through winter, and pick through the tail of the season. Germination is brisk at 7–14 days, but the crop itself is patient, needing 84–126 days to harvest, so a March sowing around Kalgoorlie crops from June while an August sowing runs deep into spring. The fully hardy plants handle cold desert nights well.

Sowing calendar — arid zone

Green months are your sowing window: March to August.

Growing notes

Peas suit arid winters better than almost anything else you can sow, but the cold desert nights come with one asterisk: while the vines themselves are fully hardy, open flowers and young pods can be burnt by a hard frost. In Alice Springs, where frosts run June through August, the elegant play is either an early March–April sowing that flowers before the deepest cold, or a June–July sowing timed so flowering lands in the warming tail of winter. Losing a flush of flowers to one white morning is the region's most common pea disappointment, and it is a timing problem, not a variety problem.

Culture is straightforward by desert standards. The deep 30–50 mm sowing buys resilience — moisture holds at that depth long after the surface has dried — and once established, peas need less coddling than summer crops: mulch, a deep soak once or twice a week, and support to keep vines off the hot, reflective soil. Even so, a few habits matter more in low humidity:

• Water at the base, never overhead — powdery mildew thrives on wetted leaves even in dry climates
• Don't push sowings past August; spring heat arrives abruptly inland and shuts pea production down fast
• Pick regularly once pods fill, which keeps the long 84–126 day season productive to its end

Peas at a glance

Companion planting

Grows well with

Carrot: Peas fix nitrogen that benefits carrots; good space use

Lettuce: Peas fix nitrogen for lettuce; provide light shade in summer

Mint: Deters aphids and pea moth

Keep away from

Garlic: Alliums inhibit nitrogen-fixing bacteria in legume roots

Onion: Alliums inhibit legume growth

Onion: Alliums inhibit legume growth

Common questions

When do I plant peas in the arid zone?

Sow direct from March to August. March and April sowings give the earliest picking; August is the last safe sowing before inland spring heat ends the season.

Does frost damage peas?

The plants are fully hardy, but open flowers and young pods can be burnt by a hard frost. Time sowings so peak flowering avoids the coldest weeks, or throw frost cloth over the row on the worst nights.

When should I sow peas in Mildura?

Any time from March to August. An autumn sowing builds strong plants through the mild Mildura winter and crops from late winter into spring.

How long do peas take from sowing to harvest?

Germination takes 7–14 days, then expect 84–126 days from sowing to harvest depending on variety and how cold the winter runs.

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