Irish Moss – Seeds (Sagina subulata)

Heath Pearlwort Lawn – Perennial

Irish Moss (Sagina subulata) is a charming, low-growing perennial that forms a lush, dense carpet of vibrant green foliage. Ideal as a natural lawn alternative, it produces tiny, star-like white flowers in late spring to summer, adding a delicate sparkle to its moss-like mat. Soft underfoot and evergreen, it’s perfect for pathways, rockeries, and between stepping stones.

Why Grow Irish Moss?

• Evergreen groundcover with soft, mossy texture

• Produces dainty white star flowers in summer

• Thrives as a lawn substitute or between paving stones

• Low-maintenance, drought-tolerant once established

Key Features

• Type: Perennial groundcover

• Height: 2–5 cm

• Spread: 15–30 cm

• Flowers: Late spring to summer

• Position: Sun to partial shade

• Soil: Moist, well-drained, prefers slightly acidic soil

Ideal For

• Lawn alternatives and green carpets

• Rockeries and alpine gardens

• Filling gaps between paving stones

• Borders, containers, and shady spots

Sowing & Growing

• Sow indoors: Early spring, press seeds lightly into moist compost (do not cover – light aids germination)

• Germination: 14–28 days at 15–20°C

• Transplant: When seedlings are strong, plant out after last frost

• Outdoor sowing: Scatter in prepared soil, gently press down

• Watering: Keep evenly moist during establishment

Tip: Irish Moss creates a resilient, evergreen carpet that softens paths and borders while suppressing weeds naturally.