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Bitter melons
Photo: "Bumpy variety of bitter melon" by Mike Licht · CC BY 2.0
Bitter melon · Tropical-cucurbit

Bitter melons

Vine · Cucurbitaceae

Bitter melon is grown for its warty green fruit and its intentionally bitter flavor, which is prized in South Asian, East Asian, and Caribbean cooking. Fruit is best harvested young while still green and crisp, before the skin yellows and the bitterness intensifies further. It suits gardeners who want a culturally important specialty vine and have a warm site with good trellis space.

At a Glance

Days to Maturity
75–90 days
Sun
8+ hours
full sun 8-10 hours
Spacing
24–48 "
Seed Start
3–4 weeks
before transplant
Container
Not Ideal
7+ gallon pot
Height
6–10 ft

Zone Planting Guide

Growing Guide

Germination

Germination Time 7–21 days
Optimal Temp 85°F
Seed Depth 0.5"

Transplanting

Min Soil Temp 65°F
Harden Off 5 days

Watering

Weekly Water 1.5–2 "
Needs Consistent
Method Drip

Soil

pH Range 6–6.8
Soil Type Warm, well-drained, fertile soil high in compost with plenty of root room.
Support Trellis — A sturdy trellis keeps fruit cleaner, improves airflow, and makes harvest easier.

Resilience

Heat: High Cold: Low Drought: Moderate

Common Problems

powdery-mildew
Cause: Dense foliage and late-season humidity encourage mildew on leaves.
Prevention: Space well, avoid overhead watering when possible, and remove badly infected leaves.
poor-pollination
Cause: Cool, rainy, or very hot weather reduces bee activity and flower fertility.
Prevention: Hand-pollinate early flowers if needed and plant pollinator-friendly flowers nearby.
cucumber-beetle
Cause: Cucurbit-feeding beetles damage seedlings and can vector bacterial wilt.
Prevention: Use row cover until bloom and inspect young plants often.

Nutrition

Feeding Intensity Moderate feeder
Recommended Recipes Root drench

Harvest

Harvest when fruit is still green, firm, and tender with immature white seeds; yellowing signals overmaturity for most culinary uses.

Expected Yield 8–15 lbs/plant
Storage 7 days — Refrigerate dry and use quickly before fruit softens.

Sources

seed_catalog Baker Creek seed_catalog Big Top Seeds university University extension

Bitter melons Planting Dates by Zone

Planting dates for Bitter melons vary by USDA hardiness zone. Select your zone below for frost dates, start-indoors timing, and a full monthly planting calendar.

Zone 5A Zone 5B Zone 6A Zone 6B Zone 7A Zone 7B Zone 8A Zone 8B Zone 9A Zone 9B

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