Black-eyed Susan- Rudbeckia hirta)-The Black-eyed Susan is a member of the Aster (Asteraceae) family. The plants can grow up to 4 feet tall but are typically 1 to 2 feet tall and havebristly-hairy leaves and stems. Flower heads are single at the top of each stem branch, with each head about 2 to 3 inches wide and composed of a dark brown to purple conical central disk surrounded by 10 - 20 yellow petals. Black-eyed Susans contribute a valuable nectar source for butterflies, moths, bees, flies and various beetles. Blooms - Late spring through midsummer. They can grow just about anywhere. Bees and butterflies are attracted to it's flower nectar. It is a Biennial which means it lives only two years. They bloom from June-October. The Black-eyed Susan is the State flower of Maryland.