When to Plant Potato in Cairns, Tropical Guide

Sow April to May. Right now in September it is out of season. The next sowing month is April.

Also called spud.

Published · Last reviewed · By Garden Buddy
Growing advice is reviewed by hand. Planting dates, current conditions and prices on this page update daily.

This Potato guide is written for the Tropical zone, which takes in Cairns, Townsville and Darwin. Somewhere else? Your postcode picks the right one.

Not your zone? Brisbane Sydney Melbourne Canberra Alice Springs Perth

Also handy: will it frost this week? and what grows in shade.

Potato

Photo: Wikimedia Commons

Potatoes are Australia's most important vegetable crop and one of the most rewarding to grow at home. They are grown from certified seed potatoes (not true seed), produce generous yields in most climates, and store well. Planting times vary dramatically by zone, with subtropical growers planting in autumn/winter and temperate growers in spring.

Planting Calendar for Tropical

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
- - - D D - - - - - - -

S = Seed Tray   T = Transplant   D = Direct Sow

Want a nudge when it is Potato sowing time in Cairns?

One email a week with what is worth planting in the Tropical zone right now, Potato included, plus which veg has jumped in price at the supermarket. Free, and you can stop it in one click.

Current Growing Conditions

Soil temperature: 21.4°C (optimal range: 8–25°C) ✓ Ready to plant

Modelled from Open-Meteo forecast (Cairns), not a live sensor.

How to Grow Potato in Tropical Australia

When to Plant

Plant March-August (dry season/winter). The cooler months are critical. Potatoes will not tuberise well when soil temperatures exceed 25C. Harvest June-November.

Soil
Well-drained, loose, fertile loam enriched with compost. Slightly acidic soil reduces scab. Avoid waterlogged or compacted soil. Do not lime potato beds.
pH Range
5.0-6.0
Sunlight
Full sun (minimum 6 hours)
Spacing
35cm apart, 70cm between rows
Watering
Consistent moisture is critical during tuber formation (flowering stage). Water deeply 2-3 times per week during dry periods. Reduce watering as foliage yellows and dies back. Irregular watering cause

Companion plants: Beans, Peas, Horseradish, Marigold, Basil

Avoid planting near: Tomato, Eggplant, Capsicum (shares diseases), Pumpkin

Tropical Growing Tips for Potato

Recommended Varieties

  • Sebago
  • Pontiac
  • Desiree
  • Coliban

Key Challenges

  • Soil too warm in summer for tuberisation
  • Potato moth is a critical pest year-round
  • Bacterial wilt in wet soils
  • Late blight during wet season

Pro Tips

  • Grow as a dry-season crop only. Summer heat prevents tuber formation
  • Heavy mulching to keep soil cool is essential
  • Harvest promptly, do not leave tubers in warm soil

Harvesting Potato

When ready: Foliage yellows and dies back naturally. For 'new' potatoes, harvest when plants are flowering (about 10-12 weeks). For storage potatoes, wait 2-3 weeks after foliage has completely died to allow skins to set.

How to harvest: Use a garden fork inserted 30cm from the stem to avoid spearing tubers. Lift carefully and remove tubers by hand. Leave harvested potatoes on the soil surface for 1-2 hours to dry (no longer or they will green). Brush off soil but do not wash until ready to use.

Worth growing?

A 2.4 m × 1.2 m bed fits 12 plants, about $26 worth at today’s Aldi, Coles, IGA and Woolworths prices, checked today.

That is roughly 12 kg at $2.16 a kilo.

Draw your potato bed → No account needed.

Where to next

What potato costs in the shops right now, retailer by retailer, updated daily.

Also worth sowing in the tropical zone this September: Lemongrass, Ginger, Cucumber and Basil.

The pest most likely to find your potato: Late Blight.

Supermarket Price

Current average retail: $2.16/kg (12-month range: $0.80–$5.33)

Grow your own and save on grocery bills.

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Common Questions About Potato

When do you plant potato in Australia?

It depends on your climate zone, not the calendar month alone. Planting months by zone:

Does potato grow all year round in Cairns?

No. In the Tropical zone the planting months are Apr to May. Outside that window it either bolts, sulks or gets cut down by the weather.

What else is potato called?

Potato is the usual Australian name. Overseas seed packets and recipes call it spud. Same plant, same growing advice.

Which zone am I in?

Type your postcode into the box under the heading and the page tells you, and links this crop in your own zone if it differs. Or look it up on the grow zone map. This page is the Tropical zone, Cairns is its reference city.