Cosmos, also known as autumn cherry, is native to Mexico. I like warm and sunny environment, cold-resistant, afraid of semi-cloudy high temperature, resistant to barren soil and stagnant water, and need loose, fertile and well-drained loam.

● Breeding

Usually propagated by sowing. Spring sowing in April, rapid germination, 7- 10 days after sowing. It can also be propagated by cutting and take root in 15- 18 after cutting.

Planting and cultivation

Transplanting 4-5 seedlings with true leaves, coring, or sowing directly after thinning. If basal fertilizer is applied to the planting area, there is no need to apply fertilizer during the growing period. The soil is too rich, the branches and leaves are white and long, and the flowering is reduced. It is not easy to blossom and bear fruit during high temperature in July and August. Seeds are easy to fall off when they are ripe, so they should be harvested in the morning. Cosmos is a short-day plant. Spring seedlings tend to have fewer leaves and fewer flowers, while summer seedlings are short and tidy, and they bloom constantly.

● Pests and diseases

There are often dangers of leaf spot and powdery mildew. You can spray wine with 500 times of 50% topcloth wettable powder. Insect pests are caused by aphids and scarabs, and spraying 10% insecticide EC 2500 times.

● Should be used.

Cosmos is tall, with elegant leaves and rich colors, including red, white, pink and purple, which is suitable for placing reading glasses. It is interesting to plant it as background material on the edge of grass, around trees and on the roadside. Double petals can be used as cut flowers.

I don't know if your home is by the sea. Saline-alkali soil cannot be sown. We usually sow in spring, but if we sow now, it may sprout. Just do an experiment.