Brown-eyed Susan (Rudbeckia hirta)
Description: This cheerful, widespread wildflower is considered an annual to a short-lived perennial across its range. Bright-yellow, 2-3 in. wide, daisy-like flowers with dark centers are its claim to fame. They occur singly atop 1-2 ft. stems. The stems and scattered, oval leaves are covered with bristly hairs. Coarse, rough-stemmed plant with daisy-like flower heads made up of showy golden-yellow ray flowers, with disk flowers forming a brown central cone.
This native prairie biennial forms a rosette of leaves the first year, followed by flowers the second year. It is covered with hairs that give it a slightly rough texture. The Green-headed Coneflower (R. laciniata) has yellow ray flowers pointing downward, a greenish-yellow disk, and irregularly divided leaves.
Synonym(s): Black-eyed Susan, Common black-eyed Susan, Brown-eyed Susan
USDA Symbol: RUHI2
Size Class: 1-3 ft.
Bloom Color: Yellow
Bloom Time: Jun, Jul, Aug, Sep, Oct
Water Use: Medium
Light Requirements: Sun
Soil Moisture: Moist
Bloom Notes: The cheerful blossoms of the Black-eyed Susans liven up bouquets. This annual may bloom longer with some afternoon shade. Birds enjoy the ripe seeds. Black-eyed Susan can become aggressive if given too perfect an environment and not enough competition.