Germination rate of cosmos, growth process of seeds

1. Germination rate

The germination rate of cosmos seeds is very low. If ordinary methods are used, the germination rate is only about 10% to 30%. Whether the operation method is appropriate during sowing will directly affect the germination rate. However, as long as you master the following techniques, the germination rate will be greatly improved.

1. Temperature: The most suitable temperature for seed germination is 22-24℃, so it is extremely important to adjust the temperature. If the temperature is too low, it will be difficult for seeds to germinate.

2. Potting soil: The planting soil used must have good air permeability. If too thick soil is used, the seeds will not be able to breathe and it will be difficult for the seedlings to break through the soil.

3. Seeds: The seeds used for sowing should be mature. Do not use seeds that are too tender, too small or shriveled. Before planting, you should also check the health of the seeds. If there are worm holes, do not use them.

2. The growth process of seeds

As long as the appropriate germination temperature is maintained, the seeds will reveal their radicles 2-5 days after sowing. After the radicles turn white, the temperature should be lowered appropriately. After another week of cultivation, it will grow small leaves, and then its growth rate will become very fast, and it will slowly grow more leaves. When it grows three pairs of leaves, you can transplant it.