1, the distribution range is different:

Red bean: China north and south are cultivated.

Red beans: produced in China, Taiwan, Guangdong, Guangxi, Yunnan. Born in mountainous open forests. Widely distributed in tropical areas.

2, different growth habits:

Cherry beans: red bean sex like temperature, like light, flood resistance. The full-life span needs more than 10 ℃, effective cumulative temperature 20-25 ℃, generally above 8-12 ℃ to start germination and seedling. Adzuki beans react sensitively to light, too early sowing to extend the growth period, maturity is not early. So from high latitude to low latitude seeding will be early maturity, and from low latitude to high latitude seeding will extend the maturity period.

Red bean: light-loving, deep root material tough, strong wind resistance. The root system is developed, with rhizoma, can fix the free nitrogen in the atmosphere. Strong germination, fast growth. The soil requirements are not strict, resistant to drought and barren, few pests and diseases. It is a positive plant, preferring strong light. Suitable for growing temperature 23-30 ℃, fast growth. Heat-resistant, drought-resistant, barren, acid-resistant, shear-resistant, wind-resistant, pollution-resistant, adult trees are not easy to transplant.

Expanded Information:

Species Distinction:

There are three species of red beans known botanically: the azuki bean (scientific name: Vigna angularis), the sea red bean (scientific name: Adenanthera pavonina?L. var. microsperma), and the acacia (scientific name: Abrus precatorius). These are three types of plants in the same family and different genera.

According to the classification of the "Chinese Flora", the red bean is listed in the genus cowpea of the subfamily Pterocarpus of the family Leguminosae; Acacia is listed in the genus Acacia of the subfamily Pterocarpus of the family Leguminosae; and sea red bean is listed in the genus Mimosa of the subfamily Mimosa of the family Leguminosae. Chickpea is an erect or twining herb and is one of the common ingredients. Acacia is mostly a vine, with a few climbing shrubs or bushes. The sea red bean is a deciduous tree, more than 5-20 meters high.

The famous "Red Bean Poem" by Tang Dynasty poet Wang Wei is often used as a symbol of longing in Chinese literature, and the "Acacia Bean" in Wang Wei's poem and legend is not necessarily Acacia seed. Similar plants in southern China include the azuki bean, the acacia seed, and the sea red bean, all of which produce bright, shiny red seeds. Which one of these is it, remains to be proven, and the botanical community has no clear answer at this time.

Baidu Encyclopedia - Adzuki Bean

Baidu Encyclopedia - Red Bean