Rudbeckia hirta

Photographs belong to the photographers who allow use for FNPS purposes only. Please contact the photographer for all other uses.

Black-eyed Susan


Plant Specifics

Size:2-3 ft tall by 1-2 ft wide
Life Span:Short-lived perennial
Flower Color:Yellow
Fruit Color:Brown
Phenology:Blooms spring-fall.
Noted for:Showy flowers


Recommended Uses:Wildflower gardens, roadside wildflowers, meadows.
Propagation:Seed.  While this is a short-lived perennial, it is usually grown as an annual.  Readily self-seeds.
Light: Full Sun
Moisture Tolerance:
always floodedextremely dry
 (Somewhat moist, no flooding ----- to ----- Very long very dry periods)
Moisture Tolerance: Somewhat moist, no flooding ----- to ----- Very long very dry periods
Salt Water Flooding Tolerance:Not salt tolerant of inundation by salty or brackish water.
Salt Spray/ Salty Soil Tolerance:Low/no tolerance of salty wind or direct salt spray
Soil or other substrate:Sand
Soil pH:Adaptable



Seeds eaten by small birds such as finches.


Attracts bumble bees, butterflies

Larval host for the silvery checkerspot, found only in extreme north Florida.

Native Habitats:Predominantly ruderal.  Roadsides and waste places.

Distribution and Planting Zones

Natural Range in Florida
USDA Zones

Suitable to grow in:
10A 10B 8A 8B 9A 9B 

USDA zones are based on minimum winter temperatures