Cosmos are annuals, not perennials. They need to be replanted each year but readily self-seed. They bloom all summer and attract pollinators.
Plant cosmos in full sun with well-draining soil. They are drought-tolerant and thrive in hot conditions. Avoid overwatering to prevent root rot.
Choosing the Right Location
Planting and Maintenance
Sow cosmos seeds directly in the garden after the last frost. Thin seedlings to prevent overcrowding. Deadhead spent blooms to encourage continuous flowering.
Enjoying Your Cosmos Garden