When to Plant Pumpkin in Cairns, Tropical Guide
Soil temperature is modelled from Open-Meteo forecast (Cairns), not a live sensor.
What this month normally looks like in Tropical
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.
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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.
- Planting window
- All year
- Days to harvest
- about 14 weeks
- Sun
- Full sun
- Spacing
- 150 cm apart
- Soil pH
- 6.0–7.0
- Shop price
- $2.50/kg at one shop
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).
Published · By GardenBuddy.au
Planting dates, current conditions and prices on this page update daily.
Photo: Wikimedia Commons
Planting Calendar for Tropical
- Jan S/T/D
- Feb S/T/D
- Mar S/T/D
- Apr S/T/D
- May S/T/D
- Jun S/T/D
- Jul S/T/D
- Aug S/T/D
- Sep S/T/D
- Oct S/T/D
- Nov S/T/D
- Dec 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 sowing time?
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.
How to Grow Pumpkin in Tropical Australia
- Soil
- Deep, fertile, well-drained soil enriched heavily with compost and aged manure. Traditionally grown on old compost heaps.
- Salt
- Moderately sensitive. Copes with a little salt, but the harvest drops on salty bore water.
- 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.
- Good companions
- NZ Spinach (as ground cover beneath tall crops), Nasturtium, Sweet Corn, Marigold, Sunflower
- Keep away from
- Egyptian Spinach, Potato
- 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
Pests and problems for Pumpkin in Tropical
- Fungal Infection Moderate
- Queensland Fruit Fly Watch
- Green Vegetable Bug Watch
- Mosaic Viruses Use clean seed and seedlings, and control sap sucking insects (AUSVEG). Watch
- Root-knot Nematode Watch
- Two-spotted spider mite Watch
- Thrips Watch
- Powdery Mildew Choose resistant varieties. Good spacing for airflow. Avoid overhead watering. Remove worst-affected leaves. Watch
- Extreme humidity promotes fungal disease Extreme humidity promotes fungal disease Watch
- Pumpkin beetle severe Pumpkin beetle severe Watch
- Fruit fly pressure Fruit fly pressure Watch
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.
Storing and preserving pumpkin
How to keep it
- Whole Storage (curing). Cure in sun 7-10 days. Store cool (15-20C), dry, ventilated. Don't stack. Keeps: 3-6 months (Butternut up to 12 months).
- Freezing. Peel, deseed, cut chunks. Steam or roast until tender. Cool and freeze in portions. Or puree and freeze. Keeps: 12 months.
- Dehydrating. Peel, deseed, slice thin (3-5mm). Steam blanch 3 min. Dehydrate 55C for 8-12 hours. Keeps: 12 months.
- Pumpkin Soup (freeze). Roast pumpkin with onion and garlic. Blend with stock. Cool and freeze in portions. Keeps: 6 months frozen.
Canning safety. Low-acid vegetables like pumpkin must be pressure canned, never water-bath canned.
Grow vs buy
A 2.4 m × 1.2 m bed fits 1 plant, about $8 worth at today’s Coles prices, checked today.
That is roughly 3 kg at $2.50 a kilo.
Draw your pumpkin bed → No account needed.
What pumpkin costs in the shops right now, retailer by retailer, updated daily.
What members get
- Soil and weather from your nearest station
- An email when it's time to sow
- Your own garden plan, including planning from a photo
- Price history and price alerts
- Pest risk alerts for your area
- Full salt and canning detail
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:
- Tropical (Cairns): all year
- Subtropical (Brisbane): Jan, Aug to Dec
- Warm Temperate (Sydney): Sep to Dec
- Cool Temperate (Melbourne): Oct to Dec
- Cold / Highland (Canberra): Oct to Dec
- Arid / Semi-Arid (Alice Springs): Jan, Aug to Dec
- Mediterranean (Perth): Aug to Dec
Can you grow pumpkin 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.
When should I plant Pumpkin in Cairns?
Can be sown all year. Dry season sowings (March to October) are easiest, as wet season humidity brings more disease.
What soil temperature do Pumpkin need?
Pumpkin germinate best when soil temperature is between 18°C and 35°C.
How do I know when Pumpkin are ready to harvest?
Skin hard (cannot dent with thumbnail), stem dry and corky, fruit sounds hollow when tapped.
What are the best Pumpkin varieties for Cairns?
Recommended varieties for the Tropical zone include: Queensland Blue (C. maxima), Butternut (C. moschata), Jarrahdale (C. maxima), Japanese (Kent/Jap, C. moschata).
What grows well with Pumpkin?
Good companion plants for Pumpkin include: NZ Spinach, Nasturtium, Sweet Corn, Marigold, Sunflower.
Are pumpkin salt tolerant?
Only a little. Pumpkin are moderately sensitive to salt, so the harvest drops on salty bore water. Mix salty water with rainwater, and mulch the bed.
Which zone am I in?
Type your postcode into the box near the top of the page and it 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.