Shim (শিম) - Lablab purpureus

Common Name :	Lablab, Bean.
Binomial Name :	Lablab purpureus
Family :	Fabaceae
Bangla Name :	Shim (শিম)
Photo Taken :	Bangladesh

Botanical Identity

Lablab purpureus, commonly known as Hyacinth Bean, Indian Bean, or Sem Bean, is a fast-growing legume known for its edible pods, seeds, and attractive flowers. It belongs to the Fabaceae family and is believed to have originated in Africa, although it has been cultivated in India since ancient times and is now naturalized across Asia and other tropical regions. The scientific name purpureus refers to the purplish hue often found in the stems, leaves, flowers, and pods of some varieties.

Plant Description

Lablab purpureus is a twining, herbaceous vine or short-lived perennial that can climb over 3 meters with support. It has trifoliate leaves — each with three broad, ovate leaflets — and vigorous growth that makes it ideal for covering trellises, fences, or arbors. The plant thrives in warm climates and prefers well-drained, moderately fertile soil with full sun exposure. It is drought-tolerant once established and often used in intercropping and sustainable farming due to its nitrogen-fixing ability.

Flowers and Fruit Characteristics

The plant bears attractive, butterfly-shaped flowers that can be white, purple, or lavender, often appearing in clusters on long stalks. These are followed by flat, curved or straight pods that vary in color from green to deep purple. Each pod typically contains 2 to 4 seeds, which may be white, brown, or black. Both immature pods and mature seeds are edible, though mature seeds must be properly cooked to remove natural toxins. The flowering season depends on climate but often peaks in late summer and fall.

Uses and Nutritional Benefits

All parts of the plant — young pods, mature seeds, flowers, and even leaves — are used in traditional cuisines, especially in South and Southeast Asia. The immature pods are often stir-fried, curried, or added to stews, while the mature seeds are boiled or used in dals and gravies. Nutritionally, Lablab purpureus is a good source of protein, fiber, iron, and B vitamins. Medicinally, it is used in Ayurveda to treat digestive and inflammatory conditions. It is also grown as fodder and green manure, making it a multipurpose crop in both home gardens and larger agricultural systems.

A White Bean flower

This green bean is locally known as white bean or Shada Shim.

This purple bean is locally known as Black bean or Kalo Shim.

Photos of this article were taken from the following locations:
1) January 2012: St Martin's Island, Cox's Bazar.
2) February 2013: Sunamganj.
3) January 2016: Jamalpur.


Written by Lonely Traveler,
For blog icflora.blogspot.com