It is suggested to plant zinnia in spring and autumn. The specific planting method is: choose healthy and full seeds. Disinfect before burial. Pot soil should be prepared in advance, soft and breathable soil. When you are ready, put it in a flowerpot and smooth it. Sprinkle seeds on the soil surface by sowing or sowing, cover them in time, water them after sowing and cover them with plastic film for germination in the future.

First, planting time

It is suggested to plant zinnia in spring and autumn, especially in April-June in spring and 8- 10 in autumn. The climate and temperature in these two periods are more conducive to seed germination and easy to manage after emergence.

Second, choose seeds.

When planting zinnia, the seeds must be healthy and full of particles, and it is best to pick them for a long time, which will affect germination. In addition, the seeds should be soaked and disinfected before sowing, and soaked in potassium permanganate solution for half an hour.

Third, prepare pots of soil

Sowing soil can be mixed with peat soil, humus soil and sand to make the mixed soil breathable and soft. Note that before use, it should be disinfected in the sun or with potassium permanganate solution to avoid residual germs and eggs.

Fourth, sow in the soil.

Zinnia can be sown as needed or directly. First put the prepared soil into the flowerpot and smooth it. After that, directly sprinkle the seeds on the soil surface or in the soil, cover the fine soil in time, and spray water with a watering can to moisturize. After planting, it should be covered with plastic film and placed in a ventilated and cool place. The temperature should be controlled between 20 and 26 degrees, and it can germinate in about a week.

morphological character

Zinnia generally refers to zinnia, and zinnia is millet. Stems erect, 30~ 100 cm tall, rough or with long bristles. The leaves are broadly ovoid or oblong-ovoid, with a length of 5 5~ 10/0cm and a width of 2.5 ~ 5cm. The stalk at the base is slightly heart-shaped, with rough sides, a dense quilt under it and three veins at the base.

The head is 5~6.5 cm in diameter, with solitary branches and no hollow thick stems. Involucre broadly campanulate; The involucral bracts are multi-layered, broadly ovoid or ovoid-elliptic, the outer layer is about 5 mm long, the inner layer is about 10 mm long, and the edge is black. The upper end of the support sheet is provided with an extended patch; The attachment is a purple fringed triangle.

The tongue flower is crimson, rose, violet or white, the tongue is obovate, the apex is 2-3 teeth or entire, the upper part is short and the lower part is villous. Tubular flowers are yellow or orange, 7~8 mm long, and the top lobes are ovate-lanceolate, with yellowish brown hairs.