Buy back two cosmos in the market, how to plant cosmos for the best effect?

Cosmos is best to choose regular sowing, generally choose spring sowing or summer sowing, spring sowing seedlings have a long growth period, generally the plant will grow tall, more leaves and fewer flowers, and summer sowing seedlings, the plant is short and neat, and the number of flowers is also more, but the summer sowing seedlings grow rapidly, and many topping are needed to promote flower bud differentiation.

The seeds of cosmos are sown directly on top of the soil, and the seeds are covered with a thin layer of fine sand. Or use a tool to comb the soil so that the seeds are evenly covered by the soil. Cosmos should be watered once after sowing, and then it needs to be watered every day to keep the soil moist, and it will germinate in about 5 to 7 days.

The light should be sufficient, full sun or semi-shade. After sowing, it usually blooms in about 8-10 weeks.

This is the best way to plant it. After planting in fertile and loose soil containing organic matter, the plants should be given sufficient light and water, and the amount of watering should be controlled to avoid stagnant water and root rot.

Prepare a pot for planting cosmos, don't underestimate cosmos, if you plant it well, it can grow more than a meter high, so a slightly larger pot with a diameter of about 15 cm is about the same. There are no special requirements for soil, and general garden soil is sufficient. The sowing time is generally spring sowing or autumn sowing.

1. Soil selection, soil drainage should be good: before planting cosmos, first of all, we must choose the soil, which is very important, choosing a suitable soil can also greatly improve its survival rate, cosmos prefers sandy soil with high porosity, the drainage and air permeability of this soil are better, it will be of great help to the growth of plants, and it is not easy to cause water accumulation.

2. Seed inducing, soaking in warm water: Before sowing the cosmos, the seeds should be soaked, the seeds can be soaked in warm water for 12-24 hours, and when the seeds begin to absorb water and swell, they can be taken out for sowing, and the seed germination rate will be higher after the infusion.

3. Sowing method, apply base fertilizer before sowing: When it comes to the planting method of cosmos seeds, the method is actually very simple, first of all, you can apply an appropriate amount of base fertilizer in the soil, and then evenly spread the seeds on the soil surface, and then cover the soil with 1-2cm on it to water.

4. Follow-up management and follow-up maintenance should be careful: after sowing, it can not be placed in the sun immediately after planting, it needs to be placed in a cool place for about a week, and then moved to the sun after the seeds emerge.

Sowing in the spring of the month, germination is rapid, and germination occurs 7 to 10 days after sowing. It can also be propagated by cuttings of young shoots, and it will take root in 15 to 18 days after cutting.

Seedlings with 4 to 5 true leaves when transplanted, and topping, can also be seeded after the seedlings. If the planting land is applied with basal fertilizer, there is no need to apply fertilizer during the growing period, and if the soil is over-fertilized, the branches and leaves are easy to grow and the flowering is reduced. 7 During the high temperature in August, flowerers are not easy to bear fruit.

Cosmos is a short-day plant, spring-sown seedlings tend to have lush branches and leaves and less flowering, and summer-sown seedlings are short, neat and flowering.