Bitter bean (Sophora alopecuroides)

Bitter bean

Bitter bean is a tree found in terrestrial habitats. The genus name, Sophora, is derived from the Arabic word for "a tree with pea-like flowers." Plants within this genus have been found dating back as far as the Eocene epoch, at least 33.9 million years ago.

Scientific classification

Species

Bitter bean (Sophora alopecuroides)

Legumes, milkworts and allies

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Perennial

Lifespan

Tree

Plant Type

1 m

Plant Height

5 - 35 ℃

Ideal Temperature

Images of Bitter bean

Distribution of Bitter bean

Distribution Map

Bitter bean is indigenous to the temperate and subtropical regions of Central and East Asia. It has also been introduced to parts of North America. It thrives in a wide range of habitats throughout these areas, adapting to various climatic conditions across major continental expanses.

Native

Cultivated

Invasive

Introduced

No species reported

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Habitat

Grasslands, deserts

Hemisphere Trend Curve

Northern

Sorthern

Care Guide for Bitter bean

Every 2-3 weeks

Water

Full sun

Sunlight

5 - 35 ℃

Ideal Temperature

Water: Bitter bean thrives in semi-arid conditions with excellent drought tolerance. It requires balanced watering every 2-3 weeks and conserves water by shedding leaves during the dry season, an effective adaptation for its habitat.

Fertilize: For bitter bean, use balanced nutrition fertilizers during the growing season and switch to high-nitrogen formulas pre-spring. Apply monthly at recommended strength, avoiding over-fertilization. Juveniles may require more frequent feeding; reduce during dormancy. Water-soluble types ensure even distribution while preventing root burn.

Pruning: Bitter bean is recognized for vibrant flowers and hardiness. Key pruning involves removing dead branches, thinning dense growth, and shaping for aesthetics. Optimal pruning time is early spring, promoting healthy growth while minimizing disease risk and enhancing vigor for a robust garden presence.

Propagation: Native to arid regions, bitter bean propagates well through cuttings from healthy, semi-hardwood stems with leaf nodes. Use rooting hormone and plant in well-draining soil. Maintain consistent moisture and warmth, ensuring drainage to prevent rot for successful root development.

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Learn More About Bitter bean

How to Transplant

How to Prune

How to Grow and Care

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