7 named cultivars

perennial

Black Mondo Grass

The Story

Plant Bio

Ophiopogon planiscapus, commonly known as black mondo grass, features grass-like foliage that is dark green to nearly black in color.

The species is unique for its striking black foliage and is appreciated for its ability to create a bold contrast in garden beds.

Uses & Benefits:

Provides lush, evergreen foliage that adds texture and contrast to shaded garden beds.

Low-maintenance groundcover that suppresses weeds and prevents soil erosion.

Supports beneficial insects and adds to biodiversity in shaded environments.

Essentials

At a Glance

Plant Type

Perennial

Height

8 inches

Width

12 inches

Light

Full Sun, Partial Sun, Shade

Zones

6, 7, 8, 9

Water

Moderate

Humidity

Average

Lifespan

Perennial

Native To

Japan

Toxicity

Non-toxic to humans and pets

Planting

How to Grow

Tuck seeds or divisions into well-draining soil in early spring.
Water regularly to keep soil moist but not waterlogged.
Mist cuttings if propagating via stem cuttings for root development.
Thin out overcrowded clumps annually to promote healthy growth.
Apply mulch to conserve moisture and suppress weeds during spring and summer.
Remove dead or damaged leaves in late winter for tidy appearance.

Pro Tip

Use well-draining soil and avoid overwatering to prevent root rot.

Keep It Thriving

Care Guide

Do

Water consistently during dry periods 🌱
Mulch annually to retain soil moisture
Divide clumps every 3-4 years for vigorous growth
Plant in partial shade for best foliage color

Don't

Don’t let soil stay waterlogged ❌
Avoid excessive fertilizing which can cause legginess
Don’t expose to full, harsh sunlight in very hot climates
Avoid disturbing roots during the growing season

Seasonal Care Calendar

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

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Evergreen groundcover in shaded gardensBorder plant with contrasting texturesSustainable shaded pathways with lush foliage

Companion Plants

HostaFerns AstilbeSolomon's Seal Japanese Forest Grass

Multiply

Propagation Methods

Good to Know

Common Questions

Black Mondo Grass questions

What zones can Black Mondo Grass grow in?

Black Mondo Grass is hardy in USDA Zones 6–9. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.

Is Black Mondo Grass deer resistant?

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

When does Black Mondo Grass bloom?

Black Mondo Grass typically blooms in late summer through early fall. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.

Does Black Mondo Grass need full sun?

Black Mondo Grass does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.

Is Black Mondo Grass drought tolerant?

Yes — once established (usually after the first full season), Black Mondo Grass handles dry spells with minimal watering. Water deeply its first year to build the root system that makes that possible.