How to Plant Cosmos Seeds? A Detailed Guide to the Planting Method
Cosmos, also known as autumn cosmos, is an annual or perennial herbaceous plant with a very large planting area in China. Cosmos has very high ornamental value and is now mainly used for landscaping. Cosmos also has considerable medicinal value, with heat-clearing and detoxifying effects, and the whole plant can be used as medicine. So how should cosmos seeds be planted? Below, the editor will give you a brief introduction. Let's take a look!
1. Planting Time
The planting time for cosmos should be controlled according to the region, because the climate differs from region to region. For example, when planting in northern regions, open-field sowing should be carried out after Qingming Festival. After sowing, if conditions such as temperature and moisture are suitable, seedlings will generally emerge in about a week. By around July, they will begin to bloom, and the flowering period can last two months. If you want to advance the flowering period of cosmos, then under good climatic conditions, you can sow around February, and the flowering time will also be earlier.
2. Timely Sowing
Cosmos has very strong growth ability, and the seeds do not need special treatment such as soaking to promote germination before sowing; the seedling emergence rate will still be very high. However, before sowing, sufficient base fertilizer should be applied, then the cosmos seeds should be evenly mixed with fine sand and broadcast over the soil. After the seeds are broadcast, an appropriate layer of fine soil should be covered over the seeds, with the soil cover kept at about one centimeter thick; it should not be too thick. After sowing, pay attention to appropriate watering to keep the soil moist and provide sufficient moisture for seed germination.
3. Transplanting and Setting Out
If direct sowing is used, then transplanting is not needed. But if seedling raising and transplanting are used, then we still need to do a good job of transplanting. Generally, after the cosmos plant has grown 4-5 leaves, it can be transplanted. If direct sowing is used, then thinning should be done at this time. When setting out, also pay attention to controlling the density; it should not be too dense, to avoid affecting flowering. After transplanting, reduce the amount of topdressing. If too much topdressing is applied, it will cause cosmos to grow excessively and reduce the flowering rate.
4. Planting Management
During the growth of cosmos, pay attention to controlling the amount of water and fertilizer. Neither watering nor fertilizing should be excessive. If cosmos shows excessive growth, then the flowering rate of cosmos will decline and the ornamental value will be reduced. Then, during the growth of cosmos, pay attention to timely removing the branches at the top center of the plant to promote the growth of side branches, which can effectively increase the flowering rate and flower quality. Finally, do a good job of pest and disease control, such as red spider mites, ensure field ventilation, and strengthen management.
The above is a brief introduction to how to plant cosmos seeds. That is all for today's introduction. This article is for reference only, and I hope it can help everyone!