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Ageratina altissima - White Snakeroot

Sun Exposure: Part Sun, Part Shade, Shade

Soil Moisture: Medium-Wet, Medium, Medium-Dry

Soil Type: Sand-Loam, Loam, Loam-Clay

Height: 2 - 3 feet

Spread: 2 - 3 feet

Blooms: July, August, September, October

Root: Fibrous, Rhizome

Habitat: Deciduous woodlands, Woodland borders, Woodland meadows along rivers, Shady corners of pastures and yards, Fence rows

Landscape uses: Pollinator garden, Rain garden, Woodland planting, Naturalization 

Complimentary Plants: Zig Zag Goldenrod, Largeleaf Aster, Tall Bellflower

Wildlife Value: The nectar of the flowers attracts a variety of insects, including leaf-cutting bees, Halictid bees, wasps, various flies, butterflies, and moths. Host Plant: Ruby Tiger Moth, various moth species

Seed Origin: Blue Mountains, Ontario

Germination Code: C(60), D


Photo credits: #1 by Fritzflohrreynolds, #2 by Cbaile19, #3 by Cbaile19

Ageratina altissima - White Snakeroot

  • White Snakeroot is native to woodland edges and recently disturbed shaded sites. In late summer to fall, pure white flowers appear in flat topped, branching clusters. This plant does well in part shade areas as it requires moisture in soils to thrive. 

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