Description
Early Sunrise Coreopsis Seeds 6430.
Award-Winning Golden Double Blooms for First-Year Colour and Cut-Flower Displays.
Early Sunrise Coreopsis (Coreopsis grandiflora) is an acclaimed All-America Selections (AAS) and Fleuroselect Gold Medal winner celebrated for its brilliant, fluffy, semi-double blooms in a rich golden-yellow. Rising on sturdy 45 cm stems, this low-maintenance perennial produces an abundance of long-lasting flowers from early summer through fall that hold their vibrant colour exceptionally well when dried. Fast-growing and reliable, it can bloom in its very first season—typically starting just 100 days after sowing—making it a perfect choice for sunny borders, rock gardens, and cutting gardens. Extremely cold-hardy down to Zone 3, it self-seeds easily once established to maintain continuous year-after-year displays.
Quick Seed Details
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Product Code: 6430
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Botanical Name: Coreopsis grandiflora ‘Early Sunrise’ (also listed as C. lanceolata)
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Type: Open-Pollinated Perennial (First-year flowering)
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Hardiness: Zone 3
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Height: 45 cm
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Plant Spacing: 30 cm
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Days to Bloom: ~100 days from sowing
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Light Requirement: Full Sun (Benefits from light morning shade)
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Soil Preference: Well-drained, average to dry soil
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Germination: 10–12 days at 21°C
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Seed Count: Approx. 25–30 seeds per packet (350 seeds per gram)
What you need to know to Plant & Grow
Early Sunrise Coreopsis is fast to establish whether started early indoors or direct-sown in the garden.
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Indoor Sowing: Start seeds indoors 10 weeks early (or as late as March for first-summer blooms). Sow in a quality soilless growing medium and maintain a temperature of 21°C for the 10 to 12 day germination window. Move sprouted seedlings under grow lights at a cooler temperature of 12°C before hardening off and transplanting outdoors after frost danger passes.
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Outdoor Direct Sowing: Direct sow seed outdoors from April to June, or sow again in August and early September for prolific flowering the following year.
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Spacing & Maintenance: Thin or space seedlings 30 cm apart in well-drained soil. Deadhead spent blossoms regularly to prolong the bloom period. Divide mature clumps every 3 to 4 years in spring to maintain vigor.
Why Early Sunrise Coreopsis Seeds belong in Your Garden
If you want reliable, first-year golden flowers on sturdy stems that require minimal fuss, Early Sunrise is a proven winner. Its Gold Medal heritage, impressive Zone 3 winter hardiness, drought tolerance, and outstanding dried-flower performance make it an irreplaceable staple for Canadian gardeners.
