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Cosmos
A favorite cottage garden annual from yesteryear, Cosmos is an easy-to-grow self-seeder that thrives in virtually any soil. Prized as a romantic cut flower, Cosmos prefers to be direct-seeded after the last spring frost date (although it may be started ahead for transplant if necessary). Bee friendly. Deer resistant. Annual. Summer flowering.
Average seed life: 2 to 3 years.
Gardening Tips
Cosmos Sowing InstructionsPlanting Depth:1/2”
Seed Spacing:1”-2”
Plant Spacing:9”-24”
Days to Germination: 5-10 days
Germination Temperature:68°-85°F
Cosmos bipinnatus. A tremendous cut flower, easy-to-grow Cosmos prefers to be direct-sown in the garden after the last frost date. Plant them 1⁄2" deep in well-draining soil with full sun. Keep uniformly moist until the seedlings emerge, about 10 days after sowing. If you must start Cosmos indoors, you may plant them 1⁄2" deep in a good seed-starting medium at 68° to 85°F about 5 to 7 weeks prior to the last frost date. Provide even moisture, strong light and good ventilation. Once established, thin to the strongest seedlings. Once 3" tall, transplant seedlings 9" to 24" apart in the garden. Quite forgiving, mature Cosmos plants will thrive in infertile or dry soil. Prized for wildflower meadows, their delicate flowers and feathery foliage belong in every heirloom garden. Summer flowering.
Our Pollinators are in Peril
Bee-Loved Romantic Cosmos
