70-84 days. Non-GMO, Heirloom PowWow Wild Berry Echinacea Herb Garden Seed from True Leaf Market. Echinacea purpurea. Echinacea grows as a warm perennial herb native to North America. These vigorous wildflowers are popular due to their abundant production, early bloom, and long growing season! Fuschia to maroon-colored buds bloom and remain bright and aromatic throughout summer. PowWow Wild Berry Echinacea is noted for its medicinal benefits, as it boosts the immune system overall!