Cassia siamea is  an evergreen tree that is fast-growing open and reaches up to 30 feet tall. Leaves are yellowish green, pinnate and made up of elliptic leaflets. Panicles of yellow flowers bloom from spring to summer.

Cassia siamea is originated from Indo-China, India, and Sri Lanka. It is a fast-growing tree, it can withstand strong wind and grow well in exposed areas. Its wood is hard and durable, which yields excellent for the manufacturing of high-quality furniture.

It is widely planted for fuel in Xishuangbanna.

The leaves can be used as medicine to relieve diarrhoea, while the roots can be used to make anthelmintics.