Incredible! Swirl Coreopsis brings a burst of color to summer and fall gardens with its distinctive swirled petals and reliable blooms from June through November. This cultivar of Coreopsis tinctoria grows 24-36 inches tall and reaches full bloom in just 42-56 days from seed, making it one of the quickest rewards for impatient gardeners. Low water needs and drought tolerance mean it thrives even when summer heat turns unforgiving, while its cheerful flowers attract pollinators throughout the season. Deer leave it untouched, and it adapts to everything from full sun to partial shade.
Partial Sun
Low
2-11
36in H x 24in W
—
High
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The swirled petal pattern sets this coreopsis apart visually, creating blooms that look almost hand-painted in the garden. It germinates fast and flowers faster, delivering color in less than two months from seed to bloom. Unlike many annual flowers that peter out by midsummer, Incredible! Swirl keeps producing from June straight through November, rewarding deadheading with continuous waves of blooms. Its low water demands make it genuinely drought-tolerant once established, asking little while giving abundantly.
Incredible! Swirl Coreopsis shines as a cutting flower, with stems tall enough (24-36 inches) to fill vases and long enough to reach back into arrangements. The extended bloom window from summer into fall makes it invaluable for continuous fresh color throughout the season. It works equally well in borders, mixed beds, and containers, and its pollinator-attracting flowers support beneficial insects all season long.
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Start seeds indoors 6-8 weeks before your average last frost date. Keep soil temperature between 60-70°F for reliable germination. Press seeds into the surface; they need light to germinate, so do not bury them. Seedlings should emerge in 5-14 days.
Harden off indoor seedlings by gradually exposing them to outdoor conditions, then transplant outdoors 6-8 weeks before your average last frost date. Space plants 12-24 inches apart in prepared garden beds.
Direct sow outdoors 1-2 weeks before your average last frost date for spring planting. In mild winter areas (zones 8-10), you can also fall sow. Direct sow again in mid-spring for succession blooms.
Deadhead spent flowers regularly throughout the summer and fall to encourage continuous blooming. Pinching back young plants when they reach 6-8 inches tall promotes bushier growth and more flowers.
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