Glyceria melicaria, commonly known as melic mannagrass or northeastern mannagrass, is a perennial grass native to a variety of wet habitats including marshes, wet meadows, fens, wet forested areas, and along the edges of ponds and streams in the eastern United States, from New Brunswick to Ontario, and south to Illinois and the Appalachian Mountains. It typically grows 2-4 feet tall and features smooth leaf sheaths, translucent ligules, and lax, elongate leaves. The inflorescence is a panicle that blooms from late June to August, with flowers that are not particularly showy but are ecologically valuable for wetland wildlife.

Melic mannagrass is valued for its ability to thrive in wet conditions and is often used for soil stabilization and habitat restoration projects. It is also suitable for rain gardens and naturalized areas where its adaptability to fluctuating water levels is beneficial. This grass prefers full sun to part shade and can tolerate a range of soil types, provided they are consistently moist. It is generally low-maintenance but may require management to prevent it from spreading too aggressively in garden settings. While it does not have major disease issues, it can be susceptible to rust in some conditions.CC BY-SA 4.0