-how to grow Persian chrysanthemum?-very simple.

See flower friends looking for how to plant cosmos, in fact, cosmos seeding is not difficult, difficult in the later pest control, because cosmos is super love insects, here we start to talk about cosmos seeding.

1. When do you plant cosmos?

Cosmos is generally sown in early spring, as long as the sowing temperature can be guaranteed to be higher than 15 ° C.

2. How to grow cosmos

Generally we are using the method of planting, because there are potted cosmos and ground planting cosmos, so there is a slight difference in the method of planting. Potted cosmos, you can break the pot soil, and then place each seed at an interval of about 1 cm, cover it with a millimeter of fine soil, and water it in a place with sufficient light. If you want to germinate early, you can cover it with plastic bags or something.

If it is planted in the ground, in order to germinate evenly, loose soil is necessary, the surface loose soil about 5 cm, and then sprinkle cosmos seeds can be planted in the ground without covering soil, watered on the line. At ordinary times, the humidity of the soil surface is sufficient. As long as the temperature reaches above 15℃, it will germinate in a few days.

Of course, if you sow seeds directly on hard land and sprinkle water, some seeds will germinate, but the germination rate is definitely not high, wasting seeds. Or you can simply order seeds, drag them around the yard with a pickaxe, draw shallow grooves in the soil according to a certain row spacing, and then drop two or three seeds into the shallow grooves at intervals of 10 centimeters, without covering the soil, and finally sprinkle water.

Below is the daily management of cosmos

There are two problems with cosmos that require our intervention. For potted cosmos, it is very necessary to control the height of the plant by topping. When the cosmos grows four true leaves, it can be topped (pinched). You can continue to pinch your head flexibly after that, because you haven't pinched your head once.

Will send out lateral branches, in the lateral branches can continue to pinch the head, so that you can achieve more branches, more flowering purposes.

Another problem is pest problem, cosmos is particularly prone to red spiders, even if planted in a pot, will also produce their own red spiders, so it is necessary to prepare some drugs to control red spiders, especially ground-grown cosmos, because of the large area, so spraying is necessary.