perennial

Japanese Cobra Lily

The Story

Plant Bio

Arisaema muratae is a perennial herbaceous plant distinguished by its distinctive, often mottled foliage and unique spathe and spadix flower structure, which typically exhibits striking coloration and patterns.

This species is notable for its adaptability to shaded, woodland environments and its unusual floral display, making it a distinctive addition to shade gardens.

Uses & Benefits:

Provides exotic foliage and flowers, adding intrigue to shaded gardens.

Prefers moist, well-drained soils, ideal for woodland settings.

Supports native pollinators and contributes to biodiversity in shaded habitats.

Essentials

At a Glance

Plant Type

Perennial

Height

12 inches

Width

8 inches

Light

Partial Sun, Shade

Zones

5, 6, 7, 8

Water

Moist

Humidity

Moderate

Lifespan

Perennial

Native To

Japan

Toxicity

All parts contain calcium oxalate crystals; toxic if ingested

Bloom period

Early spring – Mid-spring

In flower about 2 months of the year

Planting

How to Grow

Tuck tubers 2 inches deep in well-draining soil
Water regularly to keep soil moist but not waterlogged
Place in partial shade for optimal growth
Mulch around the base to retain moisture
Avoid disturbance during dormancy period of 6 weeks
Fertilize lightly in early spring with balanced fertilizer

Pro Tip

Ensure soil remains consistently moist and provide partial shade for best results.

Keep It Thriving

Care Guide

Do

Water regularly during dry periods 🌱
Mulch to conserve soil moisture
Fertilize lightly in early spring
Plant in partial shade to protect from harsh sun

Don't

Avoid overwatering to prevent rot ❌
Do not expose to full sun in hot climates ❌
Avoid disturbing tubers during dormancy ❌

Seasonal Care Calendar

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

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Mystical woodland borderShade garden accentUnique focal point

Companion Plants

Hostas Ferns Anemones Astilbes Trilliums

Multiply

Propagation Methods

Good to Know

Common Questions

Japanese Cobra Lily questions

What zones can Japanese Cobra Lily grow in?

Japanese Cobra Lily is hardy in USDA Zones 5–8. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.

Is Japanese Cobra Lily deer resistant?

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

When does Japanese Cobra Lily bloom?

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

Does Japanese Cobra Lily need full sun?

Japanese Cobra Lily does best in part shade.