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White Snakeroot
Ageratina altissima

White Snakeroot blooms into fall and does well in moist conditions and partial or full shade. Attractive to many pollinators.

USDA symbol: AGAL5

General Information

Plant TypeForb
Height2 to 4 feet
Light ExposurePart Sun
Soil MoistureMedium
Bloom ColorWhite
White Snakeroot (White Snakeroot<div><em class="small">Ageratina altissima</em></div>)
Photo credit: United States Department of Agriculture (Click to enlarge)

Tolerances

Flooding / Inundation ToleranceLow
General Resilience9
Salt ToleranceUnknown
Stress ToleranceDrought Tolerant, General Disturbance

Pollinator Value: High

Bloom MonthsJuly to August
Larval Host ofMoths
Specific Pollinators HostedLeucospilapteryx venustella
Pollinator BenefitInsect Pollinated, Provides Nectar, Supports Generalists

Project Planning

Project TypeShoreline Buffer
Coefficient of Conservatism2
Herbivore SensitivityLow
LifespanPerennial
Rate of SpreadFast
Soil StabilizationShallow
Vegetative ReproductionClonal

Range

CountyAitkin, Anoka, Becker, Big Stone, Blue Earth, Brown, Carver, Cass, Chippewa, Chisago, Clay, Cottonwood, Crow Wing, Dakota, Douglas, Faribault, Fillmore, Freeborn, Goodhue, Hennepin, Houston, Isanti, Jackson, Kandiyohi, Lac qui Parle, Le Sueur, Lincoln, Lyon, Martin, Mille Lacs, Morrison, Mower, Murray, Nicollet, Nobles, Norman, Olmsted, Otter Tail, Pine, Pope, Ramsey, Redwood, Renville, Rice, Scott, Sherburne, Sibley, Stearns, Steele, Swift, Todd, Traverse, Wabasha, Waseca, Washington, Watonwan, Wilkin, Winona, Wright, Yellow Medicine
EcoregionDriftless Area, Lake Agassiz Plain, North Central Hardwood Forests, Northern Glaciated Plains, Northern Lakes and Forests, Western Cornbelt Plains
Approximate Eco ProvinceEastern Broadleaf Forest, Laurentian Mixed Forest, Prairie Parkland, Tallgrass Aspen Parklands