Scientific: Rudbeckia hirta
Common: Black-eyed Susan, coneflower, gloriosa daisy
Family: Asteraceae
Origin: Native to every state in the United States except Hawaii, Nevada and Arizona into southern Canada.

Pronounciation: Rud-BEC-ke-a HIR-ta

Hardiness zones
Sunset
All
USDA All

Landscape Use: Border accent plant for landscape floral gardens in spring, early summer and fall.

Form & Character: Stiff and upright, bright and cheery.

Growth Habit: Short lived, bolting annual, biennial or perennial, up to 3 feet in height, often shorter.

Foliage/Texture: Coarsely pubescent, simple leaves, lower leaves with petiole, upper leaves sessile, broadly elliptic to lanceolate about twice as long as wide, sometimes coarsely serrate; medium texture.

Flowers & Fruits: Classic ray disc flower, yellow-orange petals with brown to black centers; fruit is a 4-angled achene, wind dispersed, not ornamental.

Seasonal Color: Flowers in spring to summer depending on location, tends to flower most heavily during spring in Phoenix.

Temperature: Relatively intolerant of summer heat in highly exposed areas with limited vegetation, however, will tolerate summer heat in mesic, highly vegetated areas.

Light: Partial shade to full sun

Soil: Tolerant

Watering: Regular

Pruning: Remove flower stalks after bloom.

Propagation: Seed

Disease and pests: None

Additional comments: Black-eyed Susan is a flowering accent plant for mixed annual and perennial garden borders. There are now many superior cultivars and varieties of varying heights and warm flower colors. The dwarf cultivars are especially excellent for landscape borders and smaller scale urban perennial gardens.