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Can You Grow Bitter Melon (Karela) in New Hampshire?

US · USDA Zone 5b · zones 4a, 4b, 5a, 5b, 6a

Won't grow here

Bitter melon needs sustained tropical heat that this zone cannot provide outdoors.

Plant zones

9a–12b

New Hampshire last frost

early April

New Hampshire first frost

late October

Days to harvest

55–70 days

When to plant Bitter Melon (Karela)s in New Hampshire

Start indoors

Mar 10

Transplant

Apr 7

Harvest

Jun 1 – Jun 16

Dates are approximate, based on New Hampshire's average frost dates. Your exact yard may vary by microclimate.

About Bitter Melon (Karela)

Bitter melon (karela) is a beloved vine vegetable in Indian, Chinese, and Southeast Asian cuisine. The distinctively bitter flavour is valued for digestive and blood-sugar benefits. In cold zones, grow in a greenhouse or as a long-season container crop.

Nick seeds and soak 24 hours before planting. Needs sustained heat — do not plant out until nights are reliably above 60°F. Train on a vertical trellis. Harvest at 4-6 inches while still firm and green — overripe fruits turn yellow-orange and split. Excellent for Indian bhindi-style dishes and stir-fries.

Full bitter melon (karela) growing guide →

Gardening in New Hampshire

New Hampshire has a humid continental climate. Coastal areas are Zone 5b-6a; northern mountains are Zone 4a-5a. Short growing seasons but productive for cool-season crops and berries.