Ageratina altissima

White Snakeroot (Ageratina altissima) Aster Family White Snakeroot is a common but often underused native wildflower that creates a striking display when planted in large drifts. From late summer into early fall, dense clusters of small, long-lasting white flowers rise above lush, heart-shaped foliage. The blooms are an important late-season nectar source and attract a diverse range of pollinators, including bees, butterflies, flies, and wasps. White Snakeroot is adaptable to a wide range of light conditions, from full sun to shade, but benefits from afternoon shade in the hot, humid conditions of the Piedmont and other warm regions. It spreads by both seed and underground rhizomes, allowing established plants to form dense colonies over time. This vigorous growth habit makes it well suited to informal woodland plantings, naturalized areas, and larger gardens where it has room to spread. All parts of White Snakeroot are highly toxic to humans and pets, so plant with care. Blooms: White, 6-8 weeks, Aug-Oct Leaves: Green, 5" long, heart-shaped with a toothed margin Height: 2-5’ Space: 2-4’ Soil: Moist-Average Exposure: Part sun-Part shade-Full sun Fauna: Long-tongued pollinators, leaf-cutter bees, seeds for birds, larval host for several species of Lepidoptera Seeds: Black, oblong cypsela with white tufts of hair Deer Resistance: High Zone: 3-9 Native Status: NC native, common in the Mountains and Piedmont, uncommon in the Coastal Plain Provenance: NC, seed grown