Vascular Plants of North Carolina
Account for Annual Ragweed - Ambrosia artemisiifolia   L.
Members of Asteraceae:
Members of Ambrosia with account distribution info or public map:
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Section 6 » Order Asterales » Family Asteraceae
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AuthorL.
DistributionThroughout the state, including Outer Banks and barrier islands.

Newf. to southern AK, south to FL and CA.
AbundanceCommon to often abundant.
HabitatMostly disturbed soiil of fields, pastures, roadsides, powerlines, clearings, vacant lots, yards, etc. Also on rock outcrops and ledges.
See also Habitat Account for General Successional Fields and Forblands
PhenologyFlowering and fruiting August-October.
IdentificationNo doubt familiar to all naturalists, and to hay fever sufferers, Annual Ragweed has broad leaves that are dissected into fern-like divisions. Stems typically grow 1-3 feet, sometimes much more. The inflorescence is terminal and branched, with female flowers clustered in the leaf axils and male flowers forming erect, linear rows.
Taxonomic CommentsNone

Other Common Name(s)Common Ragweed, Low Ragweed
State RankS5
Global RankG5
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