Echinacea purpurea 'Razzmatazz'. This first-ever double coneflower boasts showy pink pompoms framed by deep magenta daisy petals. The fragrant 4-inch blooms on this reliable perennial are borne on long, sturdy stems and will last two weeks in a vase. Grows 35 inches tall and 18 to 24 inches wide. USDA Zones 3-9.