When to Plant Pumpkin in Cairns, Tropical Guide

Sow year round in Cairns. That includes right now, in October.

Planting window
Can be sown all year. Dry season sowings (March to October) are easiest, as wet season humidity brings more disease.
Days to harvest
about 14 weeks
Sunlight
Full sun (minimum 6 hours daily)
Water needs
Deep watering 2-3 times per week at base of plant. Avoid wetting leaves. Reduce watering...
Spacing
150cm apart, 200cm between rows
Soil pH
6.0-7.0
Shop price
$2.50/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 Pumpkin 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.

Pumpkin

Photo: Wikimedia Commons

Pumpkins are warm-season cucurbits central to Australian food culture. Three species are commonly grown: C. maxima (Queensland Blue, Jarrahdale), C. moschata (Butternut), and C. pepo (Golden Nugget). They require long warm seasons, ample space, and insect pollination. Excellent storage crops lasting months after harvest.

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/T/D S/T/D S/T/D S/T/D S/T/D S/T/D S/T/D S/T/D S/T/D S/T/D S/T/D S/T/D

S = Seed Tray   T = Transplant   D = Direct Sow

You can sow pumpkin in any month in Tropical, but the months are not equal. Summer heat brings faster bolting and heavier pest pressure, so pick a heat tolerant variety, sow little and often, and give afternoon shade from December through February.

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

One email a week with what is worth planting in the Tropical zone right now, Pumpkin 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: 18–35°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 Pumpkin in Tropical Australia

When to Plant

Can be sown all year. Dry season sowings (March to October) are easiest, as wet season humidity brings more disease.

Soil
Deep, fertile, well-drained soil enriched heavily with compost and aged manure. Traditionally grown on old compost heaps.
pH Range
6.0-7.0
Sunlight
Full sun (minimum 6 hours daily)
Spacing
150cm apart, 200cm between rows
Watering
Deep watering 2-3 times per week at base of plant. Avoid wetting leaves. Reduce watering as fruit matures to concentrate flavour and improve storage life.

Companion plants: Corn, Beans (Three Sisters), Marigold, Nasturtium, Sunflower

Avoid planting near: Potato, Other cucurbits of same species (if seed saving)

Grow before, grow after

Pumpkin belongs with the cucurbits, 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 cucurbits go back in. Pumpkin, cucumber and zucchini want a bed with fresh compost dug through.

Tropical Growing Tips for Pumpkin

Recommended Varieties

  • Queensland Blue (C. maxima)
  • Butternut (C. moschata)
  • Jarrahdale (C. maxima)
  • Japanese (Kent/Jap, C. moschata)

Key Challenges

  • Extreme humidity promotes fungal disease
  • Pumpkin beetle severe
  • Fruit fly pressure

Pro Tips

  • C. moschata types (Butternut, Jap) most disease-resistant in tropical conditions
  • Raised beds or mounds essential for drainage
  • Plant in dry season only

Harvesting Pumpkin

When ready: Skin hard (cannot dent with thumbnail), stem dry and corky, fruit sounds hollow when tapped.

How to harvest: Cut stem with sharp knife leaving 5-10cm stem attached. Do not carry by stem. Cure in sun for 7-10 days.

Preserving: pressure canning

3 tested pressure-canning recipes for Pumpkin: 3 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.

Recipes in this set

  • Pumpkin and winter squash, cubed
  • Pumpkin, Squash
  • Winter Squash and Pumpkins: Cubed

The full recipe details are for members on a paid plan: jar sizes, headspace, process time, the pressure for a weighted or dial gauge at your altitude, the ingredients, the preparation steps and the safety notes.

See the plans

Common Pumpkin Pests in Tropical Zones

Fungal Infection, risk: MODERATE (score: 66/100)

In the pest library for pumpkin:

Queensland Fruit Fly, critical severity Green Vegetable Bug, high severity Whitefly (Silverleaf and Greenhouse), high severity Thrips (Onion, Tomato, Western Flower), high severity Two-spotted Spider Mite, high severity Root-knot Nematode, high severity Powdery Mildew, high severity Downy Mildew, high severity Mosaic Viruses (CMV, ToMV, ZYMV), high severity Aphids (Green Peach, Cabbage, Cotton), moderate severity Mealybug, moderate severity Pumpkin Beetle, moderate severity Rats and Mice, moderate severity Kangaroos and Wallabies, moderate severity

View all pest alerts →

Where to next

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

Also worth sowing in the tropical zone this October: Ginger, Lemongrass, Basil and Okra.

The pest most likely to find your pumpkin: Queensland Fruit Fly.

Supermarket Price

Current average retail: $2.50/kg (12-month range: $1.49–$3.70)

Grow your own and save on grocery bills.

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Common Questions About Pumpkin

When do you plant pumpkin in Australia?

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

Does pumpkin grow all year round in Cairns?

Yes, every month is on the calendar for the Tropical zone, though not every month is equally easy. Can be sown all year. Dry season sowings (March to October) are easiest, as wet season humidity brings more disease.

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.