* Soil temperature: Ideal germination temperature is between 65-75°F (18-24°C).
* Moisture levels: Seeds need consistent moisture to sprout.
* Depth of planting: Cosmos seeds should be planted about ¼ inch deep.
* Seed age: Older seeds may take longer to germinate or may not germinate at all.
Tips for faster germination:
* Soak the seeds: Soak the seeds in warm water for 24 hours before planting.
* Use a seed starting mat: These mats provide consistent warmth and moisture.
* Cover the seed tray with plastic wrap: This helps to retain moisture and heat.
Once the seeds have germinated, you can thin them out to give the seedlings more space to grow.
