If you want late-season flowers and strong wildlife value, plant Chelone glabra (White Turtlehead) where the soil stays evenly moist. This native perennial makes upright clumps of leafy stems topped with turtlehead-shaped, snapdragon-like white blooms from mid to late summer into fall, when many gardens need fresh color.
Give it a spot in full sun to part shade. In hotter, sunnier sites, consistent moisture is the key to sturdy growth and good flowering. In too much shade, stems can stretch and may need support, so choose a brighter edge of a woodland garden, rain garden, or the margin of a pond, stream, or low area that stays damp.
Mature size is typically about 24-36 inches tall with a spread of roughly 18-24 inches. The foliage forms a handsome green backdrop and, once established, the plant returns reliably each year. Pinching stem tips in spring can encourage a bushier habit and help reduce flopping later in the season.
White Turtlehead is valued by pollinators. The flowers draw hummingbirds and butterflies, and the plant is well known as a larval host for the Baltimore checkerspot butterfly in parts of its range. Use it in groups for the strongest garden impact and to create a clear feeding target for visiting wildlife.
Plant in rich, moisture-retentive soil and mulch to help hold moisture through dry spells. Water during extended drought, especially in full sun. Divide clumps when needed to refresh vigor and to create more plants for other moist areas of your garden.