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| General Information | |
|---|---|
| Symbol: | AMTR |
| Group: | Dicot |
| Family: | Asteraceae |
| Duration: |
Annual |
| Growth Habit: |
Forb/herb Subshrub |
| Native Status: |
CAN N L48 N |
| Data Source and Documentation | |
 |
Native |  |
Introduced |  |
Both |  |
Absent/Unreported |
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Native, No County Data |  |
Introduced, No County Data |  |
Both, No County Data |
| Native Status: | ||||||||||||||||||||||||||||
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L48 |  |
AK | |
HI | |
PR | |
VI | |
NAV | |
CAN | |
GL | |
SPM | |
NA | |||||||||
Images
Synonyms
Classification
| Rank | Scientific Name and Common Name |
|---|---|
| Kingdom | Plantae – Plants |
| Subkingdom | Tracheobionta – Vascular plants |
| Superdivision | Spermatophyta – Seed plants |
| Division | Magnoliophyta – Flowering plants |
| Class | Magnoliopsida – Dicotyledons |
| Subclass | Asteridae |
| Order | Asterales |
| Family | Asteraceae ⁄ Compositae – Aster family |
| Genus | Ambrosia L. – ragweed |
| Species | Ambrosia trifida L. – great ragweed |
Subordinate Taxa
The Plants Database includes the following 2 subspecies of Ambrosia trifida . Click below on a thumbnail map or name for subspecies profiles.
Legal Status
| Noxious Weed Information | |
|---|---|
| This plant is listed by the U.S. federal government or a state. Common names are from state and federal lists. Click on a place name to get a complete noxious weed list for that location, or click here for a composite list of all Federal and State Noxious Weeds. | |
| California
giant ragweed
B list (noxious weeds)
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| Delaware
giant ragweed
Noxious weed
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| Illinois
giant ragweed
Noxious weed
1
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1within the corporate limits of cities, villages, and incorporated towns
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| U.S. Weed Information | |
|---|---|
|
Ambrosia trifida
giant ragweed
great ragweed
horseweed
This plant can be weedy or invasive according to the authoritative sources noted below.This plant may be known by one or more common names in different places, and some are listed above. Click on an acronym to view each weed list, or click here for a composite list of
Weeds of the U.S.
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|
| STATE | Assorted authors. State noxious weed lists for 46 states. State agriculture or natural resource departments. |
| N'EAST | Uva, R.H., J.C. Neal,and J.M. DiTomaso. 1997. Weeds of the Northeast. Cornell University Press. Ithaca, New York. |
| NE&GP | Stubbendieck, J., G.Y. Friisoe,and M.R. Bolick. 1994. Weeds of Nebraska and the Great Plains. Nebraska Department of Agriculture, Bureau of Plant Industry. Lincoln, Nebraska. |
| SWSS | Southern Weed Science Society. 1998. Weeds of the United States and Canada. CD-ROM. Southern Weed Science Society. Champaign, Illinois. |
| WSWS | Whitson, T.D. (ed.) et al.. 1996. Weeds of the West. Western Society of Weed Science in cooperation with Cooperative Extension Services, University of Wyoming. Laramie, Wyoming. |
Wetland Status
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Related Links
Wildlife
Food
| Source | Large Mammals | Small Mammals | Water Birds | Terrestrial Birds |
|---|---|---|---|---|
| Miller | Low | Minor |
Cover
| Source | Large Mammals | Small Mammals | Water Birds | Terrestrial Birds |
|---|---|---|---|---|
| Miller |
Sources
| Miller, J.H., and K.V. Miller. 1999. Forest plants of the southeast and their wildlife uses. Southern Weed Science Society. |
Description of Values
| Value Class | Food | Cover |
|---|---|---|
| High | Average 25-50% of diet | Regular source of cover |
| Low | 5-10% of diet | Infrequently used as cover |
| Minor | 2-5% of diet | Sparsely used as cover |
| Moderate | Average 10-25% of diet | Occasional source of cover |
