White Snakeroot
Ageratina altissima
Also listed as Eupatorium rugosum, Eupatorium urticifolium
Also known as Richweed, Snakeroot
Climate Match for your location
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White snakeroot is a tall, upright perennial with delicate white flower clusters that bloom in late summer and fall. It thrives in partial shade and moist soils, making it suitable for woodland gardens and naturalized areas.
Why grow it
White snakeroot occupies a late-season niche in shaded woodland gardens, flowering when many perennials have faded. It establishes readily in moist soils where shade limits other options, and self-seeds modestly without becoming weedy in most settings. Compared to similar fall bloomers like joe-pye weed, it tolerates deeper shade and denser understory conditions.
Watch out for
This plant spreads by seed and rhizomes, so it benefits from occasional division or deadheading if you want to keep it confined to a particular area. In very moist, rich soils it can become densely established over time and may need thinning to prevent overcrowding of adjacent plants.
Overview
- Form
- Growth Rate
- Size
- Dormancy
- Family
- Asteraceae
Native to the United States
Native Range
Eastern North America
Native to: Alabama, Arkansas, Connecticut, District of Columbia, Delaware, Florida, Georgia, Iowa, Illinois, Indiana, Kansas, Kentucky, Louisiana, Massachusetts, Maryland, Maine, Michigan, Minnesota, Missouri, Mississippi, North Carolina, North Dakota, Nebraska, New Hampshire, New Jersey, New York, Ohio, Oklahoma, Pennsylvania, Rhode Island, South Carolina, South Dakota, Tennessee, Texas, Virginia, Vermont, Wisconsin, West Virginia
Seasonality
Bloom Season
Season of Interest
Herb
Soft non-woody plants of the field layer.
Succession Role
Tolerances & Soil
Establishment & Care
- Establishment
- Maintenance
- Propagation
White snakeroot is a tall, upright perennial with delicate white flower clusters that bloom in late summer and fall. It thrives in partial shade and moist soils, making it suitable for woodland gardens and naturalized areas.
Climate Match for your location
See how well White Snakeroot grows in your area.
Enter your ZIP code and we'll show you how this plant fits your local climate.
Why grow it
White snakeroot occupies a late-season niche in shaded woodland gardens, flowering when many perennials have faded. It establishes readily in moist soils where shade limits other options, and self-seeds modestly without becoming weedy in most settings. Compared to similar fall bloomers like joe-pye weed, it tolerates deeper shade and denser understory conditions.
Watch out for
This plant spreads by seed and rhizomes, so it benefits from occasional division or deadheading if you want to keep it confined to a particular area. In very moist, rich soils it can become densely established over time and may need thinning to prevent overcrowding of adjacent plants.
Overview
- Form
- Growth Rate
- Size
- Dormancy
- Family
- Asteraceae
Native to the United States
Native Range
Eastern North America
Native to: Alabama, Arkansas, Connecticut, District of Columbia, Delaware, Florida, Georgia, Iowa, Illinois, Indiana, Kansas, Kentucky, Louisiana, Massachusetts, Maryland, Maine, Michigan, Minnesota, Missouri, Mississippi, North Carolina, North Dakota, Nebraska, New Hampshire, New Jersey, New York, Ohio, Oklahoma, Pennsylvania, Rhode Island, South Carolina, South Dakota, Tennessee, Texas, Virginia, Vermont, Wisconsin, West Virginia
Seasonality
Bloom Season
Season of Interest
Herb
Soft non-woody plants of the field layer.
Succession Role
Tolerances & Soil
Establishment & Care
- Establishment
- Maintenance
- Propagation
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