Vigna angularis

Vigna angularis, commonly known as Adzuki Bean or Red Mung Bean, is an annual vine in East Asia and the Himalayas. It grows usually about 30-90 cm in height. The root system is a taproot that can reach a depth of 40-50 cm. The leaves are trifoliate, pinnate, and arranged alternately along the stem on a long petiole. The flowers are bright yellow papilionaceous arranged in a cluster of 6-10. The fruits are smooth, cylindrical, and thin-walled pods. Adzuki bean is commonly sweetened before eating. It is eaten sprouted or boiled. It is also used in many Chinese dishes and as a filling in Japanese sweets. Tender young pods are cooked as a vegetable. Roasted seeds are used as a substitute for coffee. Medicinally, the beans are used in the treatment of kidney diseases, constipation, abscesses, certain tumors, threatened miscarriage, retained placenta, and non-secretion of milk. Seed sprouts are used to treat threatened abortion caused by injury. A flour made from the beans is used in making shampoos and facial creams. V. angularis is also grown as a green manure and for soil erosion control.

Vigna angularis is a ANNUAL growing to 0.8 m by 0.2 m at a fast rate.
It is hardy to zone 10. The flowers are pollinated by Bees.
It can fix Nitrogen.
Suitable for: light , medium and heavy soils and prefers well-drained soil. Suitable pH: acid and neutral soils and can grow in very acid soils.
It can grow in semi-shade or no shade. It prefers dry or moist soil and can tolerate drought.

Adzuki bean is a plant of the subtropics, and is widely cultivated from the temperate zone to higher elevations in the tropics, where it is can be grown at elevations from 420 - 1,500 metres. It grows best in areas where annual daytime temperatures are within the range 15 - 30°c, but can tolerate 5 - 36°c. The plant cannot tolerate frost. It prefers a mean annual rainfall in the range 900 - 1,300mm, but tolerates 530 - 1,800mm. It is generally seen as a short-day plant, requiring a day length of 12 hours or less to initiate flowering and fruiting, though cultivars can vary in their response to day length. Requires a sunny position. Succeeds in a wide range of well-drained soils. Prefers a pH in the range 5.5 - 6.5, tolerating 5 - 7.5. Some cultivars are fairly drought tolerant. The plant can commence cropping within 60 - 190 days from seed. Average seed yields range from 1 - 2.5 tonnes per hectare. In Taiwan yields of 1,450 kilos are common, in Japan 1,900 kilos, in Kenya 500 - 600 kilos and in New Zealand 1,340 - 2,240 kilos. There are many named varieties. This species has a symbiotic relationship with certain soil bacteria, these bacteria form nodules on the roots and fix atmospheric nitrogen. Some of this nitrogen is utilized by the growing plant but some can also be used by other plants growing nearby. When removing plant remains at the end of the growing season, it is best to only remove the aerial parts of the plant, leaving the roots in the ground to decay and release their nitrogen. Bloom Color: Bright Yellow. Spacing: 3-6 in. .