2nd Year maturity. Echinacea purpurea. Purple Coneflower Seeds. Non-GMO, Heirloom, Perennial. Echinacea grows as a warm-season perennial and flowering herb native to Eastern North America. These wildflowers are popular, as fuschia-colored petals bloom on slender green stems reaching 4 feet tall! Echinacea has been used as medicine for centuries to help aid colds, cases of flu, and even treat skin irritations. As the root of Purple Echinacea can be harvested the following year, the leaves and sweet daisy-like flowers can be picked during its first season if planted early. About 25,000 seeds per ounce.