Irish Moss
Sagina subulata
suh-GEE-nuh sub-yoo-LAY-tuh
Perennials: Creeping Creeper
Zone
3: -40° to -30°
Min. Temp
Hardy: 28°
Appearance
Summer Foliage
Green
Fall Foliage
Green
Blooming Time
Late Spring - Late Spring
Habit
Mat
Height
Under 6 in
Spread
6–12 in
Form
Star
Characteristics
Type
Open-Pollinated
Safety
Non-toxic
Growth Rate
Moderate
Tolerance/Resistance
Cold Hardy
Attracts
Irish Moss
Uses/Placement
Groundcover
Optimal Growing Conditions
Sun Exposure
Full Sun - Part Shade
Soil Texture
Loamy
Soil Drainage
Moderately well-drained
Soil Moisture
Moist
Soil PH
Slightly Acidic: 6.0-6.5
PH Tolerance
Prefers slightly acidic soil
PH Correction
Low pH may cause nutrient toxicity
Soil Amendment(s)
Compost
Fertilizer
Light Feeder
Fertilizer Formula
Balanced Fertilizer
Fertilizer Timing
Early Spring
Micronutrients
Trace Minerals Beneficial
Care
Care Level
Low
Behavior and Propagation
Spreading
Aggressive Spreader
Propagation Method
Benefits from Pollinators
Propagation Licensing
Open propagation permitted
Division Timing
Spring or Fall Division