Purple Coneflower
Echinacea purpurea • Asteraceae
🌱 Seed Category
Flower
🌍 Origin Region
Eastern and central North America, widely adapted across temperate zones globally.
📅 Days to Maturity
90 to 120 days from seed to first bloom in its second year, though first-year plants may produce limited flowers late in the season. Blooms continuously throughout mid-to-late summer.
🌡️ Hardiness Zones
Thrives in USDA Hardiness Zones 3 through 9. Tolerates winter temperatures down to -40°F as a hardy herbaceous perennial.
About This Seed
The seeds are small, dark brown to blackish, elongated, four-sided, and somewhat resemble tiny wooden pegs or dashes. The resulting plant is a perennial herbaceous flowering plant reaching 2 to 4 feet in height, featuring coarse, hairy leaves and prominent purple-pink daisy-like flowers with distinctive, spiny, cone-shaped centers.
Growing Information
Growing Season
Spring or Fall; can be direct sown or started indoors 6-8 weeks before the last frost. Moderately frost-tolerant once established.
Germination
Germination takes 10 to 20 days at optimal soil temperatures of 65°F to 70°F. High germination rates are typical. Light aids germination, so seeds should be lightly pressed into the soil rather than deeply buried. Cold stratification for 2 to 4 weeks can significantly improve and speed up germination.
Planting Instructions
Plant seeds 1/4 inch deep, spaced 12 to 18 inches apart in rows spaced 24 inches apart. Prefers well-draining loamy, sandy, or clay soils with a neutral pH between 6.0 and 7.0. Requires minimal soil amendments as it naturally thrives in poor soils.
Sunlight & Water Needs
Requires full sun (6-8 hours daily) to partial sun. Water regularly during the first growing season until established; highly drought-tolerant once mature. Does not tolerate waterlogged soils.
Companion Plants
Beneficial companions include Black-Eyed Susan, Bee Balm, Sage, and ornamental grasses. Avoid planting near plants with vastly different moisture requirements. No significant allelopathic properties.
Special Characteristics
Exceptional drought tolerance, highly pollinator-friendly (attracts bees, butterflies, and beneficial insects), deer resistant, and widely used for its medicinal roots and immune-boosting properties.