How to Identify Young Bitter Melon Plants


Bitter melon is an attractive rambling vine native to tropical Africa, Asia and Northern Australia. It produces lacy foliage and pretty yellow or white flowers, which are followed by the unusual looking, bumpy, orange or green skinned fruits. The cooked fruit and young greens are eaten in China, the Philippines and other parts of Asia cooked in stews and curries. The raw fruit is quite bitter because it contains quinine and must be fully cooked before being eaten. Established bitter melons produce abundant seeds, which are relished by birds in spite of their toxicity. It's usually very easy to find young seedlings in the vicinity of a mature vine.

Step 1

Find mature melons that have exploded open on the vine, exposing the bright red seeds. Often the discarded skin of the melon will be tangled in the vine or on the ground below the plant. As soon as you notice this, watch the ground near the vine for sprouting seeds. Bitter melon seeds will germinate within 2 to 3 weeks in warm weather.

Step 2

Check to see if the seedlings have two rounded, highly toothed leaves on opposite sides of the stem. At this stage, new bitter melon seedlings look very much like young cucumber vines.

Step 3

Look for the second set of leaves emerging from the growing tip, which are the plant's true leaves. These leaves will have the same deeply lobed appearance as leaves of the parent plant. If you see these, the seedlings will almost certainly be bitter melon since the five-lobed leaf form is quite distinctive.

Tips and Warnings

  • Remove all seeds and surrounding pulp, and cook bitter melon fruit and greens well. The seeds and mature raw fruit are toxic, highly purgative and have caused abortion and death. Remove fruit before it is fully mature to control the spread of bitter melon. This plant reseeds rapidly and can become invasive. Keep this plant away from small children and dogs because of the risk of accidental ingestion of the toxic seeds.

Things You'll Need

  • Magnifying lens


  • Permacopia, Book II; D. Hunter Beyer and Franklin Martin, Ph.D.; 2002
  • A Tropical Garden Flora; George W. Staples and Derral R. Herbst; 2005
  • Washington State University
Keywords: identifying bitter melon seedlings, bitter melon seedlings, identifying Momordica charantia seedlings

About this Author

Malia Marin is a landscape designer and freelance writer, specializing in sustainable design, native landscapes and environmental education. She holds a Masters in landscape architecture, and her professional experience includes designing parks, trails and residential landscapes. Marin has written numerous articles, over the past ten years, about landscape design for local newspapers.