Ambrosia × helenae
Helen Ragweed, Helen's Ragweed
Other regional names: Sainte Hélène Island Ragweed
- Sainte Hélène Island Ragweed
Botanical Data
- Taxonomic Rank: Species
- Botanical Family: Asteraceae
- WCVP Morphological Data: Recorded natively as a annual.
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Ambrosia × helenae (commonly known as Helen ragweed or Helen's ragweed) is an annual belonging to the Asteraceae family. Originating in North America, this hybrid is primarily associated with temperate conditions. It is a naturally occurring hybrid.
Macro Climate
Temperate
Plant Type
Annual
Native Range
Continents (WGSRPD)
NORTHERN AMERICA
Regions (WGSRPD)
Eastern Canada, North-Central U.S.A., Northeastern U.S.A., Southeastern U.S.A.
Botanical Countries (WGSRPD L3)
Arkansas, Illinois, Iowa, Michigan, New York, Ohio, Ontario, Québec
Introduced Range
An “Introduced” distribution indicates that the plant is recorded outside its native range in that region as a result of deliberate or accidental human introduction. Introduced records may include casual, naturalized or invasive populations, but do not include plants that are only cultivated or planted without self-sustaining populations.
Botanical Countries (Non-Native)
Spain