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Blackeyed Susan
Rudbeckia hirta
  
About Blackeyed Susan (Rudbeckia hirta) 8 Nurseries Carry This Plant Rudbeckia hirta (common names: Black-eyed Susan, Blackiehead, Brown Betty, Brown Daisy, Brown-eyed Susan (Rudbeckia triloba), Gloriosa Daisy, Golden Jerusalem, Poorland Daisy, Yellow Daisy, Yellow Ox-eye Daisy) is a flowering plant in the family Asteraceae. It is an upright annual (sometimes biennial or perennial) native to most of North America (though only naturalized in California) and is one of a number of plants with the common name Black-eyed Susan with flowers having dark purplish brown centers. The genus name honors Olaus Rudbeck, who was a professor of botany at the University of Uppsala in Sweden and was one of Linnaeus' teachers. The specific name refers to the trichomes (hairs) occurring on leaves and stems.
Plant Description
Plant Type
Plant Type
Perennial herb

Size
Size
1 - 2.6 ft tall

Form
Form
Upright

Growth Rate
Growth Rate
Fast

Flower Color
Flower Color
Orange, Yellow, Black, Purple, Brown

Flowering Season
Flowering Season
Summer

Wildlife Supported
 


 
Butterflies & moths hosted ( 2 likely * ) SHOW ALL

Landscaping Information
Sun
Sun
Full Sun

Moisture
Moisture
Low

Nurseries
Nurseries

Ease of Care
Ease of Care
Moderately Easy

Soil Drainage
Soil Drainage
Fast, Medium, Slow

Soil Description
Soil Description
Prefers loamy or clay soils. Grows poorly in sandy soils.

Common uses
Common uses
Deer Resistant

Natural Setting
Site Type
Site Type
Meadows

Climate
Climate
Annual Precipitation: 10.2" - 90.6", Summer Precipitation: 0.34" - 1.94", Coldest Month: 26.0" - 52.2", Hottest Month: 56.4" - 78.3", Humidity: 1.28" - 24.98", Elevation: 356" - 7937"


Sources include: Wikipedia. All text shown in the "About" section of these pages is available under the Creative Commons Attribution-ShareAlike License. Plant observation data provided by the participants of the California Consortia of Herbaria, Sunset information provided by Jepson Flora Project. Propogation from seed information provided by the Santa Barbara Botanical Garden from "Seed Propagation of Native California Plants" by Dara E. Emery. Sources of plant photos include CalPhotos, Wikimedia Commons, and independent plant photographers who have agreed to share their images with Calscape. Other general sources of information include Calflora, CNPS Manual of Vegetation Online, Jepson Flora Project, Las Pilitas, Theodore Payne, Tree of Life, The Xerces Society, and information provided by CNPS volunteer editors, with special thanks to Don Rideout. Climate data used in creation of plant range maps is from PRISM Climate Group, Oregon State University, using 30 year (1981-2010) annual "normals" at an 800 meter spatial resolution.

Links:   Jepson eFlora Taxon Page  CalPhotos  Wikipedia  Calflora


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