There are two ways of propagation of sonchus oleraceus: seed propagation and rhizome propagation. Seed propagation can be carried out in spring, summer and autumn, with spring sowing as the main and summer and autumn sowing as the auxiliary. Spring sowing can be put on the market early by breeding seedlings in hotbeds, summer sowing in the open field must be prevented from growing white, and late autumn sowing should be carried out in protected facilities.

Rootstock propagation should dig out the mother roots of wild chicory, remove the old leaves, and plant it according to the plant spacing 15 cm, row spacing of 25 cm and ditching depth of 8~ 10 cm. Immediately after planting, root water should be poured, and the soil should be covered after seepage to avoid exposing the mother root.

morphological character

Chicory is an annual or biennial herb. Roots are conical, erect and straight, with many fibrous fibrous fibrous roots. The stem is erect, solitary, 40- 150 cm high, with longitudinal edges or stripes, unbranched or with short corymbose or racemose branches on the upper part, all the stem branches are smooth and hairless, or the upper inflorescence branches and peduncles are covered with head-shaped glandular hairs.

Basal leaves are pinnately parted, oblong or oblanceolate, or pinnately parted with big heads, oblanceolate, or undivided, oval, elliptical, triangular, triangular or round, and all basal leaves are gradually long or have short wings; The middle and lower stems and leaves are pinnately parted or pinnately parted, oval or oblanceolate, 3-12cm long and 2-7cm wide.

The base is sharp and narrow, the wings are narrow or wide, and gradually widen towards the base of the stalk. The base of the stem is round and ear-shaped, and the top petal is as big or as big as the side petal, showing a wide triangle, halberd and ellipse. The sidelobes are 1-5 pairs, oval, often curved downward, and all lobes are tapered at the tip or top.