Coneflower Seeds
Echinacea purpurea • Asteraceae
🌱 Seed Category
Flower
🌍 Origin Region
Native to Eastern and Central North America, well-adapted to temperate regions worldwide.
📅 Days to Maturity
Flowers typically appear 90 to 120 days from seed when grown as a perennial, with blooms lasting throughout the summer and into autumn. First-year plants establish roots and foliage, with peak flowering occurring in the second year.
🌡️ Hardiness Zones
USDA Hardiness Zones 3 through 9. Acts as a hardy herbaceous perennial returning reliably each year in these zones.
About This Seed
The seeds are small, hard, four-sided achenes that are grayish-brown and resemble tiny wooden pegs. They are embedded within the spiny, cone-like center of the flower head, often accompanied by papery chaff. The resulting plant is a perennial herbaceous flowering plant featuring sturdy stems, dark green coarse leaves, and iconic daisy-like flowers with drooping pinkish-purple petals surrounding a prominent spiny central cone. Mature plants reach 2 to 4 feet in height.
Growing Information
Growing Season
Spring or Fall. Can be direct sown or started indoors 6-8 weeks before the last frost. Moderate frost tolerance once established.
Germination
Germinates in 10 to 20 days at optimal soil temperatures of 65°F to 70°F. Germination rate is moderate to high (60-80%). Light is helpful but not strictly required for germination; a brief cold stratification period of 2 to 4 weeks can improve germination rates significantly, though not strictly mandatory.
Planting Instructions
Plant seeds at a depth of 1/8 to 1/4 inch, spaced about 12 to 18 inches apart in well-draining soil. Prefers a neutral soil pH between 6.0 and 7.0. Thrives in average to poor, well-draining garden soils and does not require heavy amendments.
Sunlight & Water Needs
Requires full sun to partial shade (at least 6 hours of direct sunlight daily). Water regularly during the first growing season to establish a deep root system; highly drought-tolerant once established. Avoid soggy soils.
Companion Plants
Beneficial companions include Black-Eyed Susans, Bee Balm, Ornamental Grasses, and Salvias. Avoid planting in overly wet areas or near heavy feeders that require constantly damp soil.
Special Characteristics
Highly pollinator-friendly, attracting bees, butterflies, and beneficial insects. Goldfinches love the mature seed heads in winter. Exhibits excellent drought tolerance, deer resistance, and heat tolerance.