Scientific Name: Rudbeckia laciniata
Common Name: Black Eyed Susan
Hardiness Zone: 3a - 9b
Hardiness Degree: -40°F (-40.0°C)
Blooming Season: Summer, Late Summer
Plant Habit: Upright
General Information: Upright, branching stems topped with large, solitary, daisylike flowers. Glossy, mid-green, deeply divided foliage. 3.5-in. (9-cm), fully double, dahlia like, golden-yellow flowers.
Water: Light
Fertilize: Once a month
Spacing: 20 - 30" (51 - 76cm)
Height: 26 - 30" (66 - 76cm)
Width: 18 - 20" (46 - 51cm)
Exposure: Sun