Black-Eyed Susans - Rudbeckia - are native to North America. There are few states where at least one species can't be found in the wild.
All Rudbeckias attract butterflies. Birds get enthusiastic about the seeds. All Black-Eyed Susans are reasonably drought-tolerant. They're especially suited to naturalizing, wildflower meadows, cutting gardens, wildlife gardens, native plant collections, heritage and cottage gardens. But they're wonderful in any perennial garden or border, even at gas stations and shopping malls.