Deschampsia caespitosa, or tufted hairgrass, prefers consistently moist, well-drained soil and can adapt to both sunny and partially shaded environments. Regular watering is essential, particularly during dry periods, to keep the plant healthy. Prune back old foliage in late winter or early spring to promote vigorous new growth. Applying mulch around the base aids in moisture retention and weed control. Avoid planting in overly dry or compacted areas for best results.