ECHINACEA PURPUREA PURPLE CONEFLOWER. Echinacea Purpurea. Purple coneflower. They are loved by bees and butterflies. The root word also applies to hedgehogs, sea urchins and chestnut husks. Germination will be improved if you employ stratification of the seed and then sow it without any soil covering or just a thin layer of vermiculite.