Butterfly Pea (Clitoria ternatea), known as Aparajita, is a slender twining legume vine cherished for its vivid deep-blue (sometimes white) flowers. A familiar plant in Indian gardens and folk tradition, its blooms are widely used to brew a striking blue herbal tea and as a natural food colour. The vine grows quickly on fences, trellises and railings with delicate pinnate leaves and, being a legume, helps enrich the soil. It flowers for much of the warm season and into the monsoon. Easy, hardy and undemanding, it thrives in full sun with moderate watering and self-seeds freely for the following year.
Specifications
| Family |
Fabaceae |
| Native region |
Tropical Asia |
| Mature height |
2-4 m as a climber |
| Mature spread |
1-2 m |
| Growth rate |
Fast |
| Foliage |
Pinnate, soft green leaves |
| Flower colour |
Deep blue (also white) |
| Flower season |
Warm season and monsoon |
| Climate zone |
Tropical to subtropical |
Care guide
| Sunlight |
Full sun to light shade. |
| Watering |
Moderate; water when topsoil dries. |
| Soil / mix |
Well-drained soil; tolerates poor soils. |
| Temperature |
Thrives 20-35C; protect from frost. |
| Humidity |
Adapts to a wide range. |
| Fertilizer |
Light feeding; as a legume needs little nitrogen. |
| Pruning |
Pinch and trim to encourage bushy growth. |
| Repotting |
Often grown annually; container yearly. |
| Propagation |
Seed (soak first); easy self-seeder. |
| Pests & problems |
Generally hardy; occasional aphids, pod borers. |
| Toxicity / safety |
Flowers edible; roots/seeds can be purgative. |
| Difficulty |
Easy |
Uses
Ornamental climber for fences and trellises; the edible blue flowers are used for herbal tea and as a natural blue food colour, and the legume enriches the soil.
Growing tips
In India sow soaked seed in the warm season; it grows fast in full sun with little feeding and self-seeds readily, so let a few pods mature for next year's plants.