Sweet Coneflower is a beautiful native Black Eyed Susan that tolerates heavy clay soils and blooms heavily from mid summer to early fall. The deep yellow daisy-like flowers have purple-brown cones which are a great food source for butterflies and insects. They smell sweetly of anise and make a great filler for the back of perennial beds or along the edges of woodlands. Rudbeckia subtomentosa can be used along stream beds and in rain gardens as well.