giant ragweed
Ambrosia trifida
Climate Match for your location
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Giant ragweed is a tall, fast-growing annual weed with coarse foliage and inconspicuous green flowers that produce large amounts of allergenic pollen in late summer and fall. It thrives in disturbed areas and is considered a serious agricultural and environmental weed across much of North America.
Overview
- Form
- Growth Rate
- Size
- Dormancy
- Family
Native to the United States
Native Range
Eastern North America
Native to: Alabama, Arkansas, Connecticut, Delaware, Florida, Georgia, Illinois, Indiana, Iowa, Kentucky, Louisiana, Massachusetts, Maryland, Maine, Michigan, Minnesota, Missouri, Mississippi, North Carolina, New Hampshire, New Jersey, New York, Ohio, Pennsylvania, Rhode Island, South Carolina, Tennessee, Virginia, Vermont, West Virginia, Wisconsin
Seasonality
Bloom Season
Season of Interest
Herb
Soft non-woody plants of the field layer.
Succession Role
Tolerances & Soil
Function & Care
Establishment & Care
- Establishment
- Maintenance
- Propagation
Giant ragweed is a tall, fast-growing annual weed with coarse foliage and inconspicuous green flowers that produce large amounts of allergenic pollen in late summer and fall. It thrives in disturbed areas and is considered a serious agricultural and environmental weed across much of North America.
Climate Match for your location
See how well giant ragweed grows in your area.
Enter your ZIP code and we'll show you how this plant fits your local climate.
Overview
- Form
- Growth Rate
- Size
- Dormancy
- Family
Native to the United States
Native Range
Eastern North America
Native to: Alabama, Arkansas, Connecticut, Delaware, Florida, Georgia, Illinois, Indiana, Iowa, Kentucky, Louisiana, Massachusetts, Maryland, Maine, Michigan, Minnesota, Missouri, Mississippi, North Carolina, New Hampshire, New Jersey, New York, Ohio, Pennsylvania, Rhode Island, South Carolina, Tennessee, Virginia, Vermont, West Virginia, Wisconsin
Seasonality
Bloom Season
Season of Interest
Herb
Soft non-woody plants of the field layer.
Succession Role
Tolerances & Soil
Function & Care
Establishment & Care
- Establishment
- Maintenance
- Propagation