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Blackeyed susan
Rudbeckia hirta
Asteraceae
 

Copyright by: Keith A. Bradley

General Landscape Uses: Wildflower gardens.

Availability: Native plant nurseries. Available in Groveland at Green Isle Gardens (321-436-4932).

Description: Medium short-lived herbaceous wildflower.

Dimensions: Typically 1-3 feet in height. Usually taller than broad.

Growth Rate: Moderate.

Range: Widespread in North America south to Miami-Dade and Collier counties, but very rare in Broward and either very rare or extirpated in the wild in Miami-Dade.

Plant Map Map of select IRC data from peninsular Florida.

 Map of suggested ZIP codes north to Indian River and Manatee counties.

 Map of ZIP codes with habitat recommendations north to Martin and Charlotte counties.

Habitats: Pinelands.

Soils: Moist to seasonally wet, moderately well-drained sandy or limestone soils, without humus.

Nutritional Requirements: Low; it grows in nutrient poor soils.

Salt Water Tolerance: Low; does not tolerate flooding by salt or brackish water.

Salt Wind Tolerance: Low; salt wind may burn the leaves.

Drought Tolerance: High; does not require any supplemental water once established.

Light Requirements: Full sun.

Flower Color: Yellow and brown.

Flower Characteristics: Showy.

Flowering Season: Summer-fall.

Fruit: Inconspicuous achene.

Wildlife and Ecology: Provides nectar for pollinators.

Horticultural Notes: Can be grown from seed.

Comments: See also the Florida Wildflower Foundation's Flower Friday page, and 2-page publication on planting and care of Rudbeckias in landscapes page.


Copyright by: Keith A. Bradley

Copyright by: Roger L. Hammer

Copyright by: Chuck McCartney

Copyright by: Susan Trammell

Copyright by: Susan Trammell

Copyright by: Shirley Denton

Copyright by: Shirley Denton

Copyright by: Shirley Denton

Copyright by: Shirley Denton


Other data on Rudbeckia hirta available from:



 
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