Snowpuff Double Click Cosmos brings a cloud of pristine white to the late-summer garden, with fully double and semi-double blooms that float on sturdy, tall stems reaching 42 inches. Hardy from zones 2 to 11, these frost-tender annuals mature in just 75 days, making them quick enough to sow in succession for continuous flowers through fall. The ethereal petals and productive habit make this a standout choice for cutting gardens and pollinator-rich borders alike.
Full Sun
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2-11
42in H x 24in W
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Moderate
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These snow-white double cosmos flowers arrive on strong, tall stems perfect for cutting, blooming prolifically within 75 days of sowing. The fluffy, fully double and semi-double petals create an almost cloud-like appearance that feels almost unreal against green foliage. Plant them close together for a cutting garden or farther apart for ornamental display, and deadhead regularly to keep the blooms coming all season long.
Snowpuff Double Click Cosmos excels as a cut flower, with long, sturdy stems that stand elegantly in arrangements. The prolific blooming habit and pollinator-attracting flowers also make it a natural choice for sunny borders and garden edges where you want continuous, showy color from midsummer through frost.
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Start seeds indoors 4 to 6 weeks before your last frost date, sowing on moist soil at a temperature between 65 and 80 degrees Fahrenheit. Keep soil consistently moist but not waterlogged until seedlings emerge.
Transplant seedlings outdoors after the last frost date when soil has warmed. Harden off seedlings gradually by exposing them to outdoor conditions over 7 to 10 days before planting. Space transplants 6 inches apart, or 18 inches between rows for easier maintenance.
Direct sow seeds outdoors after the last frost date and soil has warmed to at least 65 degrees Fahrenheit. Succession plant every 2 to 3 weeks for continuous blooms through the season.
Cut flowers in the early morning when stems are fully hydrated, selecting blooms that are fully open or just beginning to open. Use sharp scissors to cut stems at least 12 inches long, removing lower foliage before placing stems in water. Cosmos flowers last well in the vase, typically persisting for 7 to 10 days with regular water changes.
Deadhead spent flowers frequently to maximize blooming; removing faded blooms redirects energy into new flower production rather than seed development. Pinching back young plants when they reach 12 inches tall can encourage bushier growth and more blooms, though this will delay flowering by a week or two.
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