The Common rush thrives in a location with part sun and part shade. Indoors, place it in a window with dappled sun or a spot in the middle of a room. Outdoors, it can tolerate a few hours of direct sunlight, but avoid prolonged exposure to prevent dehydration and sun-scorch. The plant can also be grown in a semi-shaded conservatory or a sheltered outdoor location. Providing the right amount of light is crucial for the plant’s overall health and growth.