| Giant Ragweed {{{status}}} Fossil range: {{{fossil_range}}}
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| Plant Info
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| Common name(s):
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{{{common_names}}}
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| Growth habit:
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{{{growth_habit}}}
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| Height:
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⇕
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{{{high}}}
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| Width:
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⇔
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{{{wide}}}
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| Lifespan:
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⌛
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{{{lifespan}}}
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| Exposure:
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☼
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{{{exposure}}}
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| Water:
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☂
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{{{water}}}
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| Features:
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❀
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{{{features}}}
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| Poisonous:
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☠
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{{{poisonous}}}
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| Hardiness:
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❆
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{{{hardiness}}}
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| USDA Zones:
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{{{usda_zones}}}
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| Sunset Zones:
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{{{sunset_zones}}}
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| Scientific classification
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| Domain:
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{{{domain}}}
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| Superkingdom:
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{{{superregnum}}}
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| Kingdom:
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Plantae
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| Subkingdom:
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{{{subregnum}}}
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| Superdivision:
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{{{superdivisio}}}
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| Superphylum:
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{{{superphylum}}}
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| Division:
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Magnoliophyta
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| Phylum:
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{{{phylum}}}
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| Subdivision:
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{{{subdivisio}}}
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| Subphylum:
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{{{subphylum}}}
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| Infraphylum:
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{{{infraphylum}}}
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| Microphylum:
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{{{microphylum}}}
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| Nanophylum:
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{{{nanophylum}}}
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| Superclass:
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{{{superclassis}}}
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| Class:
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Magnoliopsida
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| Sublass:
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{{{subclassis}}}
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| Infraclass:
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{{{infraclassis}}}
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| Superorder:
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{{{superordo}}}
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| Order:
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Asterales
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| Suborder:
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{{{subordo}}}
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| Infraorder:
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{{{infraordo}}}
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| Superfamily:
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{{{superfamilia}}}
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| Family:
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Asteraceae
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| Subfamily:
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{{{subfamilia}}}
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| Supertribe:
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{{{supertribus}}}
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| Tribe:
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{{{tribus}}}
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| Subtribe:
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{{{subtribus}}}
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| Genus:
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Ambrosia
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| Subgenus:
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{{{subgenus}}}
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| Section:
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{{{sectio}}}
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| Series:
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{{{series}}}
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| Species:
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A. trifida
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| Subspecies:
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{{{subspecies}}}
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| [[{{{diversity_link}}}|Diversity]]
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| {{{diversity}}}
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| Binomial name
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Ambrosia trifida
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| Trinomial name
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{{{trinomial}}}
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| Type Species
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{{{type_species}}}
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| {{{subdivision_ranks}}}
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[[Image:{{{range_map}}}|{{{range_map_width}}}|]]
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| Synonyms
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| {{{synonyms}}}
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Ambrosia trifida, variously called Buffalo Weed, Great Ragweed, Giant Ragweed, Bitterweed, Bloodweed, Horse Cane or, Tall Ambrosia, is a perennial plant in the aster family, native throughout much of North America. Its flowers are green and are pollinated by wind rather than by insects, and the pollen is one of the main causes of late summer hay fever. Flowers are borne from midsummer through early fall.
The plant is erect, growing to 3 meters tall from clumping rootstocks.
