The petals of rape flowers are like fans, and they feel smooth and soft. Petals are yellow, roots are white and a little green. Length 1.7 cm, width 1. 1 cm. Rape flowers generally have four petals with some striped stamens in the middle. The color is green, and some tips are yellow.

Rapeseed is a herbaceous crop of Brassica in Cruciferae. It originated in Europe and is widely planted all over the world.

Rape stems are erect and branched, and only young leaves have a small amount of loose bristles; Petiole 2.5~6 cm long, with lobes at the base; The middle and upper stem leaves gradually change from oblong to lanceolate, and the base is heart-shaped and holds the stem; Racemes corymbose; Pedicel length 6~ 12 mm; Sepals ovate, petals pale yellow; Silique linear, thin beak; Pedicel about 2 cm long; The flowering period is from March to April, and the fruiting period is from April to May.