Rudbeckia hirta

black-eyed susan


Use this link to get more info about this plant from the USF Institute for Systematic Botany

Plant Specifics

Form: flower
Life Span: annual to short-lived perennial
Size: Height: 2-3 ft    Width: 1-2 ft
Flower Color: flower color      yellow
Fruit Color: fruit color      brown
Noted for: Showy flowers


Recommended Uses:

Wildflower gardens, roadside wildflowers, meadows.


Seed.  While this is a short-lived perennial, it is usually grown as an annual.  Readily self-seeds.

Availability: Seed
Light: light requirement  
Moisture Tolerance:
Soil or other substrate: Sand


Native Habitats:

Predominantly ruderal.  Roadsides and waste places.

Distribution and Planting Zones

Natural Range in Florida

USDA Zones:

USDA zones are based on minimum winter temperatures

Suitable to grow in:


Norcini, J. G. and J. H. Aldrich. 2007 (reviewed 2012). Performance of Native Florida Plants under North Florida Conditions. EDIS.