October Gardening Tips: How to Harvest and Store Cosmos Seeds for Next Spring
October is the perfect time to enjoy your blooming cosmos and get ahead on next year’s garden by harvesting their seeds. Cosmos, particularly the pink, white, and yellow varieties, create a stunning contrast against the green foliage of okra, pine trees, and Malabar spinach, and are great for attracting pollinators. Here’s how to ensure your cosmos continue to brighten up your garden year after year:
Harvesting Seeds: By now, you should see dried seeds forming from last month’s blooms. To collect them, simply pluck the dried seed heads from the plants. Make sure your container is completely dry before storing the seeds to prevent mold.
Proper Seed Storage: For cosmos seeds to stay viable, store them in a cool, dry place. The ideal storage temperature is between 40°F and 78°F. Keep the seeds in a dark area, like a drawer or cabinet, to protect them from moisture and temperature fluctuations.
Planting in Spring: When April rolls around, it’s time to plant those cosmos seeds. Prepare the soil by lightly scratching the surface, then sprinkle the seeds evenly. Press them into the soil, water them well, and let the spring rains do the rest. Before you know it, your cosmos will be popping up, bringing those familiar bright blooms to your garden!
By following these simple tips, you’ll enjoy a beautiful garden full of vibrant cosmos year after year. Happy gardening!
I garden in Zone 8, using extensive compost, year-round cover crops, and 95% no-till methods. I also connect with my plants by talking and singing with them. Feel free to adapt these practices to your own growing zone!