Irish Moss (Sagina subulata)
Soft as a whisper and lush as a forest floor, Irish Moss forms a dense, emerald carpet that feels timeless and serene. Despite its name, it isn’t a true moss but a hardy, low-growing perennial that spreads gently, knitting spaces together with tiny needle-like leaves and delicate white flowers.
It brings a fairytale quality wherever it grows—cool, calming, and deeply grounding. Perfect for terrariums, bowls, garden paths, or as a living green base layer that feels both wild and tender.
What It Looks Like
Dense, cushion-like ground cover in bright to deep green
Fine, needle-shaped foliage with a soft, mossy appearance
Tiny white star-like flowers in spring and early summer
Grows low and wide, creating a seamless green mat
Care Guide
Irish Moss is simple to care for when its love for moisture and gentle light is respected.
Light
Bright, indirect light to partial sun
Tolerates light shade
Avoid harsh, intense midday sun in hot climates
Water
Keep soil consistently moist
Do not allow soil to dry out completely
Good drainage is essential to prevent rot
Soil
Well-draining, moisture-retentive soil
Ideal for shallow pots, terrariums, and garden beds
Temperature & Humidity
Prefers cooler to moderate temperatures
Enjoys humidity
Can struggle in extreme heat if soil dries out
Pet Safe & Reptile Safe
Yes — Irish Moss is pet-safe and reptile-safe
Non-toxic to cats and dogs
Commonly used in reptile and amphibian enclosures
Excellent choice for bioactive terrariums
Quick Care Tips
Moist soil is key—never bone dry
Gentle light keeps it lush and green
Trim lightly to maintain shape
Ideal as a living carpet or terrarium base
Cooler conditions = happier plant
Troubleshooting
Browning or crispy patches
→ Soil too dry or heat stress
→ Increase watering and move to cooler conditions
Yellowing or thinning growth
→ Poor drainage or stagnant soil
→ Improve airflow and drainage
Patchy or uneven growth
→ Needs trimming or more consistent moisture
→ Lightly prune and water evenly
No flowers
→ Light too low
→ Increase brightness gently
