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Can You Grow Bitter Melon (Karela) in Oklahoma?

US · USDA Zone 7a · zones 6a, 6b, 7a, 7b

Won't grow here

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

Plant zones

9a–12b

Oklahoma last frost

early March

Oklahoma first frost

late November

Days to harvest

55–70 days

When to plant Bitter Melon (Karela)s in Oklahoma

Start indoors

Feb 7

Transplant

Mar 7

Harvest

May 1 – May 16

Dates are approximate, based on Oklahoma'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 Oklahoma

Oklahoma ranges from Zone 6a in the Panhandle to Zone 7b in the southeast. Hot summers and mild winters. Long growing season for warm-season crops.