500 Ageratina altissima White Snakeroot Seeds Native Wildflower Heirloom Garden

Ageratina altissima, commonly called White Snakeroot, is a herbaceous perennial wildflower native to eastern and central North America, valued for its late-season clouds of fluffy white blooms that brighten shaded woodland edges and naturalized garden areas. This heirloom selection offers an easy-to-grow, pollinator-friendly presence in cottage, meadow, and shade gardens.
White Snakeroot produces flat-topped clusters of tiny white flowers from late summer into autumn, held on upright stems clad in serrated dark green leaves. It performs well in woodland gardens, pollinator plantings, and naturalized areas, where its blooms support bees, butterflies, and other beneficial insects. Plants spread gradually by seed and rhizomes, forming attractive colonies over time in moist, shaded settings.
Species: Ageratina altissima
Type: Herbaceous perennial
Plant_Habit: Upright clumping, spreads by rhizomes
Sun: Partial shade to full shade
Soil: Moist, well-drained, rich in organic matter
Zones: 3-8
Germination: Cold stratification recommended
Sowing: Surface sow, light required
Spacing: 18-24 inches
Notes: Native wildflower, late-season blooms