70-84 days. Non-GMO, Heirloom Magnus Herb Garden Seed from True Leaf Market. Echinacea purpurea. Echinacea purpurea; 26 inches. 1998 Perennial Plants Association Plant of the Year. Large, 4.5 inches, rose-purple blooms are borne on strong sturdy stems. Petals lie flatter than other cultivars. Excellent for cuttings.