When to Plant Bottle Gourd 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 Bottle Gourd 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
- Feb to Sep
- Days to harvest
- about 21 weeks
- Sun
- Full sun
- Water
- Regular
- Soil pH
- 6.0–7.5
Lagenaria siceraria is bottle gourd, including culinary New Guinea bean/cucuzzi types. This record covers edible selections harvested young; it is neither a legume nor a Cucurbita squash.
Published · By GardenBuddy.au
Planting dates, current conditions and prices on this page update daily.
Photo: Wikimedia Commons
Planting Calendar for Tropical
- Jan -
- Feb D
- Mar D
- Apr D
- May D
- Jun D
- Jul D
- Aug D
- Sep D
- Oct -
- Nov -
- Dec -
S = Seed Tray T = Transplant D = Direct Sow
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How to Grow Bottle Gourd in Tropical Australia
- Soil
- Rich, fertile, moist, organic-rich loam
- Salt
- Moderately sensitive. Copes with a little salt, but the harvest drops on salty bore water.
- pH Range
- 6.0-7.5
- Sunlight
- Full sun, at least 6 to 8 hours of direct sun a day
- Spacing
- 45-120cm apart, 180cm between rows
- Watering
- Keep the soil moist, as the seed suppliers ask for moist, well-drained soil.
- Good companions
- Nasturtium, Dwarf Beans, Sweet Corn, Radish, Basil
Tropical Growing Tips for Bottle Gourd
Recommended Varieties
- Mini Bottle (Small bottle gourd): Direct sow in spring after frost, 20 mm deep, 150 cm between plants. Susceptible to mildew
- New Guinea Bean (Cucuzza) (Edible long gourd): Ready in 60 to 75 days when picked young
- Kobu (Bottle gourd)
Key Challenges
- Powdery Mildew: Weakens leaves and reduces the crop
- Cucumber fly: Females lay eggs in the fruit, and the larvae tunnel through and rot it
- Pumpkin Beetle: Adults chew holes in leaves and flowers
Pro Tips
- Feed with well-rotted manure or compost prior to planting, followed by a liquid potassium-rich fertiliser during flowering and fruit setting
- Apply a thick organic mulch around the base of vines to retain soil moisture and keep roots cool during summer
- Provide a sturdy trellis, fence, or arbor for vigorous climbing vines to produce straight, unblemished gourds
Pests and problems for Bottle Gourd in Tropical
- Powdery Mildew Space and trellis plants for airflow, avoid overhead watering, and control weeds. The Seed Collection lists this gourd as susceptible to... Watch
- Pumpkin Beetle Pumpkin Beetle: Adults chew holes in leaves and flowers Watch
- Cucumber fly Cucumber fly: Females lay eggs in the fruit, and the larvae tunnel through and rot it Watch
Harvesting Bottle Gourd
When ready: Harvest young tender gourds when 30 to 60 cm long for eating; leave on vine until skin hardens if harvesting for containers or dried gourds
How to harvest: Cut fruit stem with clean secateurs or sharp knife, leaving a short stem stub intact
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 Bottle Gourd
When do you plant bottle gourd in Australia?
It depends on your climate zone, not the calendar month alone. Planting months by zone:
- Tropical (Cairns): Feb to Sep
- Subtropical (Brisbane): Jan to Mar, 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 to Mar, Aug to Dec
- Mediterranean (Perth): Sep to Dec
Can you grow bottle gourd all year round in Cairns?
No. In the Tropical zone the planting months are Feb to Sep. Outside that window it either bolts, sulks or gets cut down by the weather.
When should I plant Bottle Gourd in Cairns?
Supplier recommends dry-season sowing. A frost-tender annual; use a strong trellis and well-drained soil.
What soil temperature do Bottle Gourd need?
Bottle Gourd germinate best when soil temperature is between 20°C and 30°C.
How do I know when Bottle Gourd are ready to harvest?
Harvest young tender gourds when 30 to 60 cm long for eating; leave on vine until skin hardens if harvesting for containers or dried gourds
What are the best Bottle Gourd varieties for Cairns?
Recommended varieties for the Tropical zone include: Mini Bottle (Small bottle gourd): Direct sow in spring after frost, 20 mm deep, 150 cm between plants. Susceptible to mildew, New Guinea Bean (Cucuzza) (Edible long gourd): Ready in 60 to 75 days when picked young, Kobu (Bottle gourd).
What grows well with Bottle Gourd?
Good companion plants for Bottle Gourd include: Nasturtium, Dwarf Beans, Sweet Corn, Radish, Basil.
Are bottle gourd salt tolerant?
Only a little. Bottle gourd 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.