PROGRAMS FACT SHEETS PUBLICATIONS SERVICES RESOURCES
INSECTS AND MITES DISEASES PLANT CULTURE & MAINTENANCE IPM TOOLS WEED HERBARIUM
UMass Extension Weed Herbarium
 

Common Name: black-eyed susan
Scientific Name: Rudbeckia hirta L.
Family Name: Asteraceae (Compositae) - Aster or Sunflower Family

Identification Notes:

life cycle - perennial, reproducing by seed

stems - upright, coarse hairs, rough, infrequently branched growth habit

leaves - alternate, lower leaves broadly lanceolate or oblong, short petioled, upper leaves more linear, sessile; all leaves coarsely haired and toothed to weakly toothed, 3 to 5 veined

flowers - heads of purple-brown disk (tubulate) florets form rounded and elevated cental disk surrounded by orange-yellow ray (ligulate) florets; terminal, long stalked flowers

Images:

Rudbeckia hirta thumbnail 1 Rudbeckia hirta thumbnail 2
Click to enlarge
Click to enlarge

Return to weed index sorted by: Common Name | Scientific Name | Family Name

 

 

© Copyright 2000-2008 University of Massachusetts Amherst. Site Policies. This site is maintained by UMass Extension. United States Department of Agriculture cooperating. UMass Extension offers equal opportunity in programs and employment.

If you are experiencing problems with this site, please contact the webmaster.