The Black-Eyed Susan, 'Rudbeckia hirta', is the most drought tolerant of all the Rudbeckias. The beautiful 2 to 4 inch daisy like flowers are adorned with orange/yellow petals. Black-Eyed Susans bloom for a long time, at least 60 days. Even though grown as an annual, Black-Eyed Susan is technically a short-lived perennial and may come back for a second or third year. They provide good fall color; when many perennial and annual flowers are beginning to fade, the Black-Eyed Susan look great.
