Irish Moss
Sagina subulata
Caryophyllaceae · Groundcover
Irish Moss creates a lush, moss-like carpet of emerald green foliage, perfect for filling in between stepping stones or as a soft lawn alternative in small areas. It's charmingly delicate but surprisingly tough, tolerating light foot traffic.
- · Prefers consistent moisture and well-drained soil; protect from drying out.
- · Can benefit from some afternoon shade in hot climates.
- · Divide clumps periodically to maintain vigor and spread.
At a glance
- Growing zones: 4-8
- Sun: Full sun to partial shade
- Water: Moderate
- Maintenance: Moderate
- Type: Groundcover
- Mature size: 1-2 inches tall · 6-12 inches wide
- Bloom season: Late spring to early summer · White
- Pollinator friendly: Not particularly
- Container suitable: Yes
- Cold tolerance: Hardy to -25F
- Heat tolerance: Moderate
- Soil: Moist, well-drained, sandy
- Growth rate: Moderate
Buy Seeds · Amazon
Affiliate link — gardens.net earns a commission from qualifying purchases at no extra cost to you.