When to Plant Coneflower Seeds
coneflower ( Echinacea spp . ) can take up to two eld to start bloom when spring up from come , but once they set about blossom , they put up long - survive florescence every summertime . you’re free to embed coneflower germ during the fountain , summertime or other autumn . Image Credit: coneflower are perennial in U.S. Department of Agriculture industrial plant hardiness zone 3 through 9 , calculate on coinage and cultivar ....