Black-eyed Susan Rudbeckia sullivantii Rudbeckia offers bold splashes of reliable color from mid summer to fall. Plants are upright and grow to about 2-3 feet. They prefer full sun to very light shade in average garden soil.
Plants are drought tolerant once established.
Rudbeckia sullivantii are the true perennial types. The cultivar 'Goldstrum' is included here. Rudbeckia hirta is the annual type. The cultivars here include 'Marmalade', 'Rustic Colors' and 'Goldilocks'. These tend to reseed freely and act like true perennials.