Generally speaking, it is appropriate to sow cosmos seeds in April each year. After sowing, if the temperature is suitable, it will germinate in about 4 days. In addition, cosmos seeds can be planted directly in the soil.

Persian Seed Germination Temperature

The suitable temperature for cosmos seed germination is about 15 to 20 degrees Celsius. Generally they germinate quickly as long as the temperature is favorable during the growing period. If some protection from the sun is needed in the summer, the temperature should not be too high.

Persian Seeds Germinate Out of the Ground

Persian seeds can be planted after two to three days of soaking. Soaked seeds will germinate quickly, usually taking three to four days.

How to Germinate Cosmos Seeds

You can choose to soak cosmos seeds in water at about 20 degrees Celsius to speed up germination. You can plant them after soaking them for about a day or two. In this way, the treated cosmos seeds will germinate and emerge faster. Also, after planting you need to water it diligently to ensure that it is not dehydrated while growing.

Photo of cosmos seed germination