Some nurseries that specialize in rare and native plants may have less common Echinacea species, but they can be difficult to find. Most echinaceas are magenta to purple, but there are also white, yellow, orange, and red varieties, as well as some hybrid double-flowered varieties that look like pompoms. The purple and yellow colors occur naturally in the wild, but all others have been created through crossing different species of echinacea. For example, crossing purple coneflower (E. purpurea) with yellow coneflower (E. paradoxa) has resulted in hybrid plants that have red and orange flowers, some with an ombre color pattern. At any garden center you will likely find many different hybrid echinacea.