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Bransford, W.D. and Dolphia
Geranium robertianum L.
Herb Robert, Robert geranium
USDA Symbol: GERO
USDA Native Status: Native to U.S.
Paired, pink to lavender flowers on stalks rising in axils of intricately divided leaves on hairy, reddish, branching stems.
This European introduction, naturalized in North America, is an especially attractive member of the geranium family, but the leaves have an unpleasant odor when crushed. It is variously reported to have been named for Saint Robert of Molesme, whose festival date in April occurs at about the time the flowers bloom in Europe, or for Robert Goodfellow, who is known as Robin Hood.
Plant CharacteristicsDuration: Annual Habit: Herb Flower:
Bloom InformationBloom Color: Pink , Purple
Bloom Time: May , Jun , Jul , Aug , Sep , Oct
AK , CA , CT , IL , IN , MA , MD , ME , MI , MO , NH , NJ , NY , OH , OR , PA , RI , TN , VA , VT , WA , WI , WV Canada: NB
, PE Native Distribution:
Ontario east to Newfoundland, south to Virginia and Tennessee, west to Missouri, and north to Wisconsin; also from Alaska south to California. Native Habitat:
Ravines and rocky woods. USDA Native Status: L48(NI), AK(I), CAN(N),
BenefitConspicuous Flowers: yes
Recommended Species Lists
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Record Modified: 2007-01-01
Research By: TWC Staff