When is the best time to sow cosmos seeds?

Cosmos seeds sowing time

Cosmos seeds are very easy to survive after sowing, so the suitable time for sowing is relatively long. They can be sown between March and August, as long as the temperature is between 15-35 degrees. After sowing, as long as the growth conditions are suitable, they can germinate quickly.

Cosmos seeds planting method and steps

1. Soil selection: When sowing cosmos seeds, you need to choose loose soil rich in organic matter, and apply an appropriate amount of decomposed organic fertilizer before sowing, and disinfect it, so that there will be sufficient nutrients for growth.

2. Sowing: When sowing, the cosmos seeds need to be evenly spread on the seedbed and mixed with a certain amount of sand. After sowing, a one-centimeter layer of soil needs to be covered and the soil needs to be kept moist.

3. Sowing and maintenance: After sowing the cosmos seeds, the temperature needs to be kept at around 18 degrees. They will gradually germinate after about 5-7 days. If there is sufficient light, they will bloom after about 8-10 weeks.

4. Seedling care: When the cosmos seedlings grow 4-5 true leaves, they need to be transplanted and topped. This will allow them to grow faster and prevent excessive growth of branches and leaves.