100 Seeds White Snakeroot Ageratina altissima Native Wildflower Shade Tolerant

White Snakeroot (Ageratina altissima) is a native perennial wildflower of eastern North American woodlands, treasured for its late-season clouds of fluffy white blooms that brighten shaded borders and naturalized areas. Its upright, clump-forming habit and tolerance for low light make it a valued choice for woodland gardens and pollinator plantings.

The white flower clusters appear in late summer into autumn, drawing bees, butterflies, and other beneficial insects when many other plants have finished blooming. It works well in shaded perennial borders, native plant collections, and moist woodland settings, and its dried stems can be left standing for winter interest. Grow it in humus-rich, consistently moist soil for best results.
Species: Ageratina altissima
Type: Herbaceous perennial
Plant_Habit: Upright, clump-forming
Sun: Partial shade to full shade
Soil: Moist, well-drained, humus-rich
Zones: 3-9
Germination: 14-30 days with cold stratification
Sowing: Surface sow, light required for germination
Spacing: 18-24 inches
Notes: Native woodland wildflower; blooms late summer to fall