500 White Snakeroot Seeds – Ageratina altissima Native Wildflower for Pollinator & Woodland Gardens

White Snakeroot (Ageratina altissima) is a native perennial wildflower prized for its late-season clouds of fluffy white blooms. This woodland and pollinator garden favorite brings a soft, natural look to shaded borders, native plantings, and naturalized areas. Its nectar-rich flowers appear in late summer and fall, offering a valuable food source for bees, butterflies, and other pollinators when many other plants have finished blooming.

With its upright, clump-forming habit and tolerance for shade, White Snakeroot is a useful addition to woodland gardens, pollinator gardens, and native landscapes. It pairs well with other shade-loving perennials and provides late-season interest in areas that receive dappled light.

Plant Features

• Native perennial wildflower with clusters of small white flowers
• Blooms in late summer to fall, supporting pollinators
• Tolerates partial shade to full shade
• Clump-forming growth habit, suitable for naturalized areas
• Attracts bees, butterflies, and other beneficial insects

Growing Information

• Botanical Name: Ageratina altissima
• Plant Type: Herbaceous perennial
• Sunlight: Partial shade to full shade
• Soil: Moist, well-drained soil; tolerates a range of soil types
• Water Requirements: Medium; keep soil consistently moist, especially during establishment
• Growth Habit: Upright, clump-forming
• Bloom Season: Late summer to fall
• Mature Height: 2 to 4 feet
• Spacing: 18 to 24 inches apart

Planting & Care

White Snakeroot seeds can be sown directly in the garden or started indoors. For best results, sow seeds on the soil surface and press them lightly into the soil, as they require light to germinate. Keep the soil consistently moist but not waterlogged. Germination may be slow and irregular; cold stratification can improve results. Once seedlings emerge, thin them to the recommended spacing to allow good air circulation.

Plant White Snakeroot in a shaded or partially shaded location with moist, well-drained soil. Water regularly during the first growing season to help establish a deep root system. In subsequent years, the plants are relatively low-maintenance. Deadhead spent flowers if you wish to prevent self-seeding, or leave them to allow natural spread in woodland gardens. Divide clumps every few years to maintain vigor.

What's Included

500 White Snakeroot (Ageratina altissima) seeds.