Coccinia grandis aka Ivy Gourd

Coccinia grandis, or ivy gourd, belongs to the cucumber family. Its native range spans tropical Africa and the western Arabian Peninsula. It also grows naturally across tropical and subtropical Asia. This perennial vine grows from a tuberous rootstock. It lives in scrub, savannah, forest, and thickets. People grow it for food in warm regions.

Garden size accounts differ, so allow room for a climber. PFAF gives a height of about 10 feet [3 metres]. Useful Tropical Plants lists a height near 49 feet [15 metres]. It also records stems reaching 66 feet [20 metres]. Tendrils help the vine climb through nearby plants. Young stems are soft and may last one season. Older stems can persist and turn woody over time. The vine can spread across the ground or into trees.

PFAF lists flowering from August to September. Male and female flowers grow on separate plants. Insects carry pollen, and the plant cannot fertilise itself. Both sexes must grow together for fruit and seed. The fruit reaches about two inches in length. Young fruit is green and can be eaten raw. Cooks also add it to curries and other dishes. Ripe fruit turns scarlet and has sweet, fleshy pulp. People cook young leaves and tender shoot tips as greens. They also add these parts to soups.

Give ivy gourd a sunny site with shelter from wind. It grows in sand, loam, or clay with good drainage. It prefers loose soil rich in humus and steady moisture. Water it well through the growing season. It accepts mildly acid, neutral, and mildly alkaline soil. PFAF lists USDA zones 8–11 but warns against British outdoor winters. A greenhouse is normally needed for fruit in Britain. In hot summers, gardeners may grow it as a tender annual. Start plants under glass and plant out after frost. A sunny wall or woodland edge provides a possible site.

Its food value comes with a serious risk of escape. Useful Tropical Plants reports invasions in Guam, Saipan, and Hawaii. Dense growth can cover and smother other plants. It also hosts melon fly and may harbour crop viruses. These risks limit its value near natural areas and crops. PFAF records traditional medicinal uses and studies of blood-sugar effects. Those reports do not establish safe home treatments. The sources list no known hazards, but provide no pet-safety assessment.