Irish Moss is a luxurious, evergreen ground cover plant which grows just 1 - 2 inches tall. It can be used as lovely color between flagstones or spilling over rocks. Dense tufts of slender stems grow together to form a lush carpet of green. Small, star-shaped, white flowers cover this flowering ground cover plant from late spring until mid-summer. Beautiful Carpet of green and gold Use Irish moss where a very low, fine-textured carpet of green or gold is desired, such as around stepping stones, between flagstones, or at the edges of a path as they tolerate light foot traffic.