Bitter melon (bitter gourd) is a warty, distinctive gourd prized across Asian cooking for its unique bitterness. A vigorous, ornamental climber, it revels in a hot, humid summer up a strong trellis.
Quick facts
- Position: full sun, loves heat & humidity
- Spacing: 40–50 cm apart
- Tub depth: our 35 cm depth
- Time to harvest: 12–16 weeks
- Support: a strong trellis
When to plant: Bitter melon is frost-tender and heat-loving — plant from late spring through summer. It needs a long, warm season. Our free planting calendar shows the right months for your postcode.
Growing it in a raised bed: Plant into rich, warm mix at the base of a trellis and let it climb. Hand-pollinate a few female flowers in the morning if fruit set is poor.
Watering and feeding: Keep the mix moist through the warm season; it's a thirsty, vigorous grower.
Common pests: keep an eye out for aphids and fruit fly. Most are easily managed — see our safe pest guide.
Common diseases: the main ones are powdery mildew and mosaic virus. Good airflow, morning watering and steady moisture prevent most.
Companion plants: Give it a trellis of its own; grows well beside other cucurbits. See our companion planting guide.
Harvest and storage: Pick the fruit young and pale green for milder flavour, or riper for more bitterness — but before it turns orange and splits. Regular picking keeps it producing.
More growing guides: cucumbers, pumpkins and cucamelon.
Plan your patch: our free planting calendar shows what to plant now where you live. Ready to grow? Browse our raised garden beds or build your own with the garden bed builder.
Image: Forest and Kim Starr, CC BY 3.0 us, via Wikimedia Commons.
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