Description: Perennial, herbaceous creeper with vivid blue or white flowers and flat edible pods.
Grow best: Easy to grow in well-draining but moist soil.
Use: Ornamentally. Flowers are used as a food dye, to make tea and in Ayurveda. The flowers also find use for religious purposes in temples and altars at home. These plants have nitrogen fixing bacteria in their roots and therefore grown to improve the nitrogen content of the soil.