What does wild wormwood look like?

There is a layer of white fluff and yellow flowers on the surface of chrysanthemum morifolium, which is called "chrysanthemum morifolium" by the people.

The height of mugwort is 50 ~ 150 cm. Stems white and hairy, much branched. Simple lobe auriculate; Have a handle; 2 ~ 3 pinnately parted or totally parted, the terminal lobes are broadly linear, linear or nearly lanceolate, the apex is often obtuse, the upper part is green, the hairs are few, the lower part is grayish green, and it is densely covered with white hairs; Whether the leaves in the upper part of the stem are pinnately divided; Almost sessile.

The head is hemispherical, 5 ~ 7 mm in diameter, with peduncles hanging down and arranged in panicles; Involucral bracts densely covered with white hairs, outermost linear, grayish yellow-green; Small flowers are tubular, yellow, with glandular spots on the surface, all solid, and the receptacle is hairy, as long as the small flowers. Achenes are small, long and narrow, obovate, longitudinally striped, yellowish brown, and less than 1 mm in length. Fruit-bearing period: September ~ 65438+ 10.

breeding method

Seed propagation: Before propagation, the shriveled grains and lean grains should be screened out, leaving solid grains. Seed propagation is generally carried out in February ~ March. Before sowing, the seeds should be soaked in warm water at 30℃ for 24 hours, then taken out, wrapped in wet cloth and placed in a greenhouse at 20℃. Seeds can be sown when they have bud eyes. Edelweiss seeds are very small, and its ability to top the soil is very poor. So sow the seeds by sowing. You can sow seeds by mixing them with fine sand.

Root-splitting propagation: annual plants can be selected to dig roots in early spring, then the roots are cut into small pieces 3-5 cm long for cutting, and finally the cuttings are buried in the seedbed. The planting depth is 0.5cm, and the plant spacing is 2cm× 3cm respectively.

The above contents refer to Baidu Encyclopedia-Artemisia annua.