Sagina Subulata - Irish Moss
Looking just like a woodland moss, this popular evergreen ground cover forms a flat carpet of bright green foliage studded with tiny white flowers. Fills in nicely between flagstones, also good as a lawn substitute. Best with evenly moist soil. Not a good choice for full shade.
Sun: Full or partial sun
Traffic tolerance: moderate foot traffic
Growth rate: moderate
Bloom time: Late Spring to Late Summer
Hardiness: -40C (Zones 3-9)