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Ground Cover · Easy

How to Grow Irish Moss

Sagina subulata

Your complete guide to growing Irish Moss.

☀SunFull sun to partial shade (4-6+ hours)
💧WaterModerate, drought tolerant once established
🗺Zones4–8
📏Height1-2 inches
Irish Moss📷 Wikimedia Commons

When to Plant Irish Moss

Planting windows vary by USDA hardiness zone. Look up yours by ZIP code.

ZoneStart IndoorsDirect SowHarvest
Zone 4 — — —
Zone 5 — — —
Zone 6 — — —
Zone 7 — — —
Zone 8 — — —

Companion Plants for Irish Moss

✓ Good companions

Ajuga

Both form dense mats and can create attractive mixed groundcover patterns

Astilbe

Both prefer cool, moist conditions and Irish moss provides attractive groundcover beneath

Creeping Thyme

Both form dense, walkable mats and can be used together in stepping stone paths

Ferns

Share preference for moist, shaded areas and complement each other's textures

Heuchera

Similar growing requirements and Irish moss softens the base of coral bells

Hostas

Both thrive in similar shade conditions and create layered woodland garden aesthetics

Moss Phlox

Creates beautiful contrast with Irish moss while sharing similar low-growing habit

Wild Ginger

Both are shade-loving groundcovers that naturalize well together in woodland settings

✗ Keep away from

Black Walnut

Produces juglone which is toxic to many plants including sensitive groundcovers

English Ivy

Vigorous spreading vine that will climb over and kill Irish moss through competition

Mint

Extremely aggressive spreader that will quickly overtake and smother Irish moss

Notes from the garden

A greener inbox, occasionally.

Seasonal planting ideas, useful tips and a little inspiration. No weeds.