Sophora japonica blooms in the spring, acacia flowers crumpled and curled, petals scattered, complete calyx campanulate, yellowish-green, apex 5 lobed; petals 5, yellow or yellowish-white, 1 piece of a larger, suborbicular, apex retuse, the remaining 4 pieces oblong. Stamens 10, 9 of them basally united, filaments slender. Pistil terete, curved. Body light. Gas slightly, taste slightly bitter.

Sophora is a prolific flower, racemes, butterfly-shaped corolla, in full bloom in clusters, overlapping and hanging. The florets are much wrinkled and curled, the petals are much scattered, the calyx of the intact ones is campanulate, yellowish-green, the apex is 5-lobed;

Petals are 5, mostly yellow or yellowish-white, usually 1 is larger, the apex is slightly concave, and the remaining 4 are oblong; there are 10 stamens, 9 of which are united at the base, and the filaments are slender.

Extended information:

Buried root propagation

1, prepare for seed: acacia can be introduced after the fall of the leaves of the roots, planting before the sand buried in the preservation of the sand to master the sand humidity, neither let the root section of the dehydrated and dried up, but not too heavy and moldy humidity and rotting.

2, land preparation: seedling selection of deep soil, flat terrain, convenient irrigation and drainage, no source of disease and insect infection of sandy loam soil is best. Each 667 square meters of 2500 kg of animal manure, or 50 kg of phosphate fertilizer and diammonium for base fertilizer; with furadan and other insecticides to kill underground pests. The ground should be y turned, fine, rake flat, bed width of about 1 meter.

3, seedling: seedling time in the south in early to mid-March, late March to early April in the north. Select 1 ~ 2 years old diameter 5 ~ 10 mm without traces of pests and diseases of smooth root segments, root segments to 30 cm spacing flat in the ditch, covered with fine sandy soil, pouring root water, cover the film, about a month can be seedlings.