When to Plant Potato in Cairns, Tropical Guide
Sow April to June. Right now in October it is out of season. The next sowing month is April.
Grow Potato in your space
Also called spud.
- Planting window
- Plant certified seed potatoes only in the dry season, because tubers will not form well in hot soil. Early types like Ruby Lou are the...
- Days to harvest
- about 10 weeks
- Sunlight
- Full sun (minimum 6 hours)
- Water needs
- Consistent moisture is critical during tuber formation (flowering stage). Water deeply...
- Spacing
- 35cm apart, 70cm between rows
- Soil pH
- 5.0-6.0
- Shop price
- $2.25/kg average
Published · Last reviewed · By GardenBuddy.au
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.
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.
See what grows now in your own postcode
Planting Calendar for Tropical
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| - | - | - | ✓ | ✓ | ✓ | - | - | - | - | - | - |
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: 22.5°C (optimal range: 8–25°C) ✓ Ready to plant
Modelled from Open-Meteo forecast (Cairns), not a live sensor.
What this month normally looks like
In October the Tropical zone normally runs 34°C by day and 23°C overnight, with about 53 mm of rain over 5 or 6 wet days. Averages 1991 to 2026, 37 postcodes, SILO.
How to Grow Potato in Tropical Australia
When to Plant
Plant certified seed potatoes only in the dry season, because tubers will not form well in hot soil. Early types like Ruby Lou are the safest bet, dug before the build-up heat.
- 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...
Companion plants: Beans, Peas, Horseradish, Marigold, Basil
Avoid planting near: Tomato, Eggplant, Capsicum (shares diseases), Pumpkin
Grow before, grow after
Potato belongs with the nightshades, the fruiting crops turn of a four turn bed rotation.
- Grow before it
- Leafy greens and brassicas (Lettuce, Silverbeet, Broccoli)
- Grow after it
- Roots and alliums (Carrot, Beetroot, Onion)
Give the bed 3 turns before nightshades go back in. Tomato, capsicum, eggplant and potato share wilts and blights that live on in the soil.
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.
Preserving: pressure canning
2 tested pressure-canning recipes for Potato: 2 where it is the crop being canned. Each one comes from published home canning guidelines. The conversion to Australian units is ours, with psi beside every kPa. Always follow your pressure canner's manual.
Worth growing?
A 2.4 m × 1.2 m bed fits 12 plants, about $27 worth at today’s Aldi, Coles, IGA and Woolworths prices, checked today.
That is roughly 12 kg at $2.25 a kilo.
Draw your potato bed → No account needed.
Where to next
Supermarket Price
Current average retail: $2.25/kg (12-month range: $0.80–$5.33)
Grow your own and save on grocery bills.
Get the Full Interactive Guide
Track your garden, get real-time pest alerts, and plan around your zone's weather.
Open the planting dashboard Join GardenBuddy.auCommon 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:
- Tropical (Cairns): Apr to Jun
- Subtropical (Brisbane): Feb to Apr, Jul to Aug
- Warm Temperate (Sydney): Jan to Feb, Jul to Sep
- Cool Temperate (Melbourne): Sep to Dec
- Cold / Highland (Canberra): Sep to Dec
- Arid / Semi-Arid (Alice Springs): Feb to Mar, Sep
- Mediterranean (Perth): Feb to Mar, Jul to Oct
Does potato grow all year round in Cairns?
No. In the Tropical zone the planting months are Apr to Jun. 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.