Dichanthelium scabriusculum, commonly known as Tall Swamp Panicgrass, is a perennial grass native to wet meadows, marsh edges, and open swampy woodlands primarily in the eastern United States. It is a clump-forming grass that typically grows to a height of 1 to 3 feet (0.3 to 0.9 meters). The plant features narrow, lance-shaped leaves and produces small, greenish flowers in loose, open panicles during late spring to midsummer. The flowers are not particularly showy, but they do provide ecological benefits to the native habitat by supporting pollinators.

Tall Swamp Panicgrass is valued for its ability to thrive in wet conditions, making it suitable for rain gardens, wet meadows, and restoration projects. It is often used to stabilize soil and prevent erosion in moist areas. This grass prefers full sun to part shade and requires consistently moist to wet soils. It is not drought-tolerant and may require additional watering during dry periods. While not commonly found in the horticultural trade, it can be a useful plant for naturalistic landscaping in appropriate conditions. Potential problems include susceptibility to rust and fungal diseases in overly wet or humid conditions.CC BY-SA 4.0