Irish Moss
Sagina subulata · Perennial
Irish Moss is a moderate-growing perennial, hardy in USDA zones 4-8, that matures to about 1–2 in × 12 in. It does best in full sun and part shade with medium water needs in moist and well-drained soil. Expect white blooms in spring and summer.
- USDA zones
- 4-8
- Sun
- Full sun, Part shade
- Water
- Medium
- Mature size
- 1–2 in × 12 in
- Spacing
- 6–12 in
- Growth rate
- Medium
- Maintenance
- Medium
- Soil
- Moist, Well-drained
- Foliage
- Green
- Bloom color
- White
- Bloom season
- Spring, Summer
- Native to
- Europe
Will it survive your winters?
We score Irish Moss’s freeze-trouble range against the real coldest nights your area has recorded.
Powered by ~35 years of daily lows from the nearest NOAA weather station. A risk read, not a guarantee — a sheltered spot or mature plant beats the odds.
More plants for your zone: Zone 4 · Zone 5 · Zone 6 · Zone 7 · Zone 8
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