Photos are representative and may not match your specific variety.

Irish Moss

Ground cover

Sagina subulata

Overview
Not actually a moss but a charming perennial that forms dense, carpet-like mats of tiny bright green foliage. Perfect for filling gaps between stepping stones or creating a soft, cushioned groundcover in small spaces. In late spring, it's dotted with tiny white star-shaped flowers that add delicate beauty to this tough little plant.
Planting
Sow seeds on surface in spring or fall, or plant divisions. Press seeds lightly into soil but don't cover.
Growing
Sun: partial. Water: low. Soil pH: 6–7. Space plants 6" apart. Germination: 10-21 days.
Pests & diseases
Common pests: Aphids, spider mites (rare). Common diseases: Crown rot in poorly drained soils, fungal issues in high humidity.