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
Plants flagged as 'Introduced' have been transported outside their native historical range by human activity. While many are common ornamentals, some may become naturalized or invasive in local environments. Local ecological guidelines require verification prior to planting.
Botanical Countries (Non-Native)
Spain