Calamagrostis coarctata, commonly known as tight reed grass, is a perennial grass native to riparian areas, wet meadows, and marshes across Eastern Europe. It can grow up to 4 feet tall and is characterized by its stiff, upright growth habit. The plant produces feathery flower plumes that are highly valued for their aesthetic appeal. Tight reed grass typically blooms in the summer, with flower colors ranging from greenish to purplish, which can add a soft texture to garden landscapes. This species is particularly noted for its ability to adapt to wet conditions and is often used for ornamental purposes in gardens, as well as for stabilizing streambanks and slopes.

Tight reed grass is appreciated for its low maintenance requirements and its ability to thrive in full sun to partial shade. It prefers consistently moist soils but can tolerate short periods of dryness once established. This grass is suitable for planting in rain gardens, as a border plant, or in naturalized areas where its roots can help prevent soil erosion. While it is not known for significant pest or disease issues, it can become invasive if not managed properly in garden settings. Gardeners should be aware of its potential to spread via rhizomes and self-seeding.CC BY-SA 4.0