When to Plant Bitter Melon in Melbourne, Cool Temperate Guide
Soil temperature is modelled from Open-Meteo forecast (Melbourne), not a live sensor.
What this month normally looks like in Cool Temperate
In October the Cool Temperate zone normally runs 19°C by day and 8°C overnight, with about 67 mm of rain over 9 or 10 wet days. The coldest October night on record across the zone was -3.0°C, so a late frost is not out of the question. Averages 1991 to 2026, 28 postcodes, SILO.
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This Bitter Melon guide is written for the Cool Temperate zone, which takes in Melbourne, Hobart and Geelong. Somewhere else? Your postcode picks the right one.
Not your zone? Cairns Brisbane Sydney Canberra Alice Springs Perth
Also handy: will it frost this week? and what grows in shade.
- Planting window
- Oct to Dec
- Days to harvest
- about 11 weeks
- Sun
- Full sun
- Water
- Regular
- Spacing
- 60 cm apart
Bitter melon is a climbing vine with warty green fruit that is eaten as a bitter vegetable. It needs warm soil above 20°C and a trellis.
Published · By GardenBuddy.au
Planting dates, current conditions and prices on this page update daily.
Photo: Wikimedia Commons
Planting Calendar for Cool Temperate
- Jan -
- Feb -
- Mar -
- Apr -
- May -
- Jun -
- Jul -
- Aug -
- Sep -
- Oct D
- Nov D
- Dec D
S = Seed Tray T = Transplant D = Direct Sow
Want a nudge when it is sowing time?
One email a week with what is worth planting in the Cool Temperate zone right now, Bitter Melon included, plus which veg has jumped in price at the supermarket. Free, and you can stop it in one click.
How to Grow Bitter Melon in Cool Temperate Australia
- Soil
- Moist, well drained soil with plenty of compost.
- Salt
- Moderately sensitive. Copes with a little salt, but the harvest drops on salty bore water.
- Sunlight
- Full sun, 6 hours or more (Seed Collection).
- Spacing
- 60cm apart
- Watering
- Keep the soil moist. Wet weather can bring wilt and fungal disease.
- Good companions
- Sweet Corn, Radish, Basil, Climbing Beans, Okra
- Keep away from
- 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.
Cool Temperate Growing Tips for Bitter Melon
Key Challenges
- Short warm season
- Cold soil
- Frost
Pro Tips
- Use a north facing wall
- Start late spring
- Expect a small crop
Pests and problems for Bitter Melon in Cool Temperate
Harvesting Bitter Melon
When ready: First fruit comes about 11 to 12 weeks after sowing (Succeed Heirlooms). Pick while the fruit is green and firm.
How to harvest: Cut the fruit from the vine with scissors.
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 Bitter Melon
When do you plant bitter melon in Australia?
It depends on your climate zone, not the calendar month alone. Planting months by zone:
- Tropical (Cairns): Feb to Nov
- Subtropical (Brisbane): Jan, Sep to Dec
- Warm Temperate (Sydney): Jan, Oct to Dec
- Cool Temperate (Melbourne): Oct to Dec
- Cold / Highland (Canberra): not recommended
- Arid / Semi-Arid (Alice Springs): Jan, Sep to Dec
- Mediterranean (Perth): Oct to Dec
Can you grow bitter melon all year round in Melbourne?
No. In the Cool Temperate zone the planting months are Oct to Dec. Outside that window it either bolts, sulks or gets cut down by the weather.
When should I plant Bitter Melon in Melbourne?
Sow from October to December in a warm, sheltered spot (Seed Collection cool chart). The 11 to 12 week crop needs warm weather to finish, so a cool summer means a small crop.
What soil temperature do Bitter Melon need?
Bitter Melon germinate best when soil temperature is between 25°C and 28°C.
How do I know when Bitter Melon are ready to harvest?
First fruit comes about 11 to 12 weeks after sowing (Succeed Heirlooms). Pick while the fruit is green and firm.
What grows well with Bitter Melon?
Good companion plants for Bitter Melon include: Sweet Corn, Radish, Basil, Climbing Beans, Okra.
Are bitter melon salt tolerant?
Only a little. Bitter melon 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 Cool Temperate zone, Melbourne is its reference city.