15-24" tall x 18" wide. This is the yellow flowered form of Prairie Coneflower. It is a wonderful native prairie wildflower that blooms from mid-summer into fall with a cheerful display of graceful daisies with petals that sweep backwards from the center cone. A good re-seeder, it will gently colonize disturbed soils and open areas. Low fertility, well-drained soil. (seed propagated)