When to Plant Bitter Melon in Perth, Mediterranean Guide
Soil temperature is modelled from Open-Meteo forecast (Perth), not a live sensor.
What this month normally looks like in Mediterranean
In October the Mediterranean zone normally runs 22°C by day and 10°C overnight, with about 38 mm of rain over 6 or 7 wet days. The coldest October night on record across the zone was -0.2°C, so a late frost is not out of the question. Averages 1991 to 2026, 19 postcodes, SILO.
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This Bitter Melon guide is written for the Mediterranean zone, which takes in Perth, Adelaide and Bunbury. Somewhere else? Your postcode picks the right one.
Not your zone? Cairns Brisbane Sydney Melbourne Canberra Alice Springs
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 Mediterranean
- 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 Mediterranean 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 Mediterranean 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.
Mediterranean Growing Tips for Bitter Melon
Key Challenges
- Cool nights
- Late frost
- Short season
Pro Tips
- Use a warm, sheltered spot
- Water regularly
- Treat dates as a guide
Pests and problems for Bitter Melon in Mediterranean
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 Perth?
No. In the Mediterranean 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 Perth?
No Mediterranean calendar was found. Sow from October to December like the temperate zone. Dry summers suit it if it is watered. Derived.
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 Mediterranean zone, Perth is its reference city.