Summer-blooming annual Rudbeckia hirta, black-eyed Susan, bears single yellow, dark-centered daisies on 3-foot stems. The beloved cottage and cutting garden staples, Gloriosa daisies, with their marvelous blends of gold, orange, reddish, and mahogany petals on daisies up to 6 inches across, are a strain of this species; like black-eyed Susans, they bloom the first year from seed and are usually treated as annuals, though they may live a second or even third year if left in place.
Mass in borders with other summer bloomers, in informal plantings, and cutting gardens. Coneflowers are naturals for the meadow or prairie garden, where their showy blooms add welcome color. Leave them standing in the meadow or prairie until spring—birds (including goldfinches) love the seeds, and the cones will remain showy through winter.