perennial

Yellow Cobra Lily

The Story

Plant Bio

Arisaema flavum is a perennial herbaceous plant distinguished by its striking, umbrella-like foliage and unique spathe and spadix flower structure, typically featuring yellow hues that attract pollinators.

This species is notable for its vibrant yellow coloration and adaptability to rocky or well-drained soils, making it a distinctive addition to shade gardens and woodland settings.

Uses & Benefits:

Adds unique foliage and early spring interest in shaded garden areas.

Prefers moist, well-drained soils ideal for rain gardens.

Supports local pollinators attracted to early spring blooms.

Essentials

At a Glance

Plant Type

Perennial

Height

12 inches

Width

8 inches

Light

Partial Sun, Shade

Zones

5, 6, 7, 8, 9

Water

Moist

Humidity

Moderate

Lifespan

Perennial

Native To

Asia

Toxicity

Toxic if ingested

Planting

How to Grow

Tuck bulbs 2 inches deep in well-draining soil
Water regularly to keep soil moist but not soggy
Provide partial shade for optimal growth
Mulch around the base to retain moisture
Fertilize with balanced fertilizer in early spring
Protect from frost in colder zones

Pro Tip

Plant bulbs in fall for spring emergence and ensure good drainage.

Keep It Thriving

Care Guide

Do

Water consistently to keep soil moist 🌱
Apply mulch to conserve moisture
Provide partial shade in hot climates
Use organic fertilizer in spring
Divide clumps every 3-4 years

Don't

Avoid waterlogging soil ❌
Don’t expose to full sun in hot climates ❌
Don’t disturb bulbs during dormancy
Avoid over-fertilizing

Seasonal Care Calendar

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

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Shaded woodland borderMoist shady garden bed

Companion Plants

Hostas Ferns Astilbes LigulariaJapanese painted fern

Multiply

Propagation Methods

Good to Know

Common Questions

Yellow Cobra Lily questions

What zones can Yellow Cobra Lily grow in?

Yellow Cobra Lily is hardy in USDA Zones 5–9. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.

Is Yellow Cobra Lily deer resistant?

Not reliably. Deer may browse Yellow Cobra Lily, especially tender spring growth — plan on repellents or fencing where pressure is high.

When does Yellow Cobra Lily bloom?

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

Does Yellow Cobra Lily need full sun?

Yellow Cobra Lily does best in part shade.