2 named cultivars

groundcover

Irish Moss

Q: What zones can Irish Moss grow in?

Irish Moss is hardy in USDA Zones 4–8. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.

Q: Is Irish Moss deer resistant?

Yes — Irish Moss is rated deer-resistant. Deer typically pass it over, though extreme hunger can override any plant's defenses.

Q: When does Irish Moss bloom?

Irish Moss typically blooms in mid-spring through late spring. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.

Q: Does Irish Moss need full sun?

Irish Moss does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.

Sagina subulata

$11.77

The Story

Plant Bio

Sagina subulata, commonly known as Irish Moss, is a low-growing perennial that forms a lush green mat of moss-like foliage. It is often used as a ground cover and in rock gardens.

This plant is known for its ability to withstand foot traffic, making it an ideal choice for walkways and between stepping stones.

Uses & Benefits:

Sagina subulata creates a lush, green groundcover that brightens borders and rock gardens, providing a soft texture and low-maintenance beauty.

Its dense mat helps prevent soil erosion and suppress weeds in garden beds.

Provides habitat for beneficial insects and pollinators in garden ecosystems.

Essentials

At a Glance

Plant Type

Groundcover

Height

1 inches

Width

12 inches

Light

Full Sun, Partial Sun

Zones

4, 5, 6, 7, 8

Water

Moderate

Humidity

Moderate

Lifespan

Perennial

Native To

Europe and Asia

Toxicity

Non-toxic to humans and pets

Marketplace

Where to Buy

New Garden Plants

<1 Gal Pot

In Stock$11.77

American Meadows

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Planting

How to Grow

Tuck seeds into well-draining soil in early spring.
Mist cuttings lightly every few days to maintain humidity.
Water regularly to keep soil moist but not soggy.
Apply a balanced fertilizer monthly during the growing season.
Divide plants every 2-3 years in early spring for optimal growth.
Mulch around the base to conserve moisture and suppress weeds.

Pro Tip

Use a sandy or loamy soil for best drainage and vibrant growth.

Keep It Thriving

Care Guide

Do

Water consistently to keep soil moist 🌱
Provide full sun for optimal flowering
Mulch to retain soil moisture

Don't

Avoid overwatering to prevent root rot ❌
Don’t plant in heavy clay soil without amendment
Avoid excessive fertilizing which can cause legginess

Seasonal Care Calendar

Task	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Divide
Mulch
Pest Check
Plant
Spring Cleanup

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Silver-foliaged groundcoverBorder edging with delicate foliageRock garden accents

Companion Plants

SedumThyme Creeping Jenny DianthusLavender

Multiply

Propagation Methods

Good to Know

Common Questions

Irish Moss questions

What zones can Irish Moss grow in?

Irish Moss is hardy in USDA Zones 4–8. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.

Is Irish Moss deer resistant?

Yes — Irish Moss is rated deer-resistant. Deer typically pass it over, though extreme hunger can override any plant's defenses.

When does Irish Moss bloom?

Irish Moss typically blooms in mid-spring through late spring. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.

Does Irish Moss need full sun?

Irish Moss does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.