1 named cultivar

‘Himalayan Giant’Himalayan Giant Jack-in-the-Pulpit

perennial

Himalayan Cobra Lily

The Story

Plant Bio

Arisaema speciosum is a perennial tuberous plant distinguished by its striking, umbrella-like foliage and unique, hooded flowers that often display striking patterns and colors, making it a popular choice for shade gardens.

Notable for its very large, deep purple-maroon and white-striped spathe. The spadix ends in a long, thread-like appendage that can hang down several feet. Its single, large leaf is trifoliate with reddish margins.

Uses & Benefits:

Striking hooded flowers add exotic appeal to shaded gardens.

Prefers moist, shaded environments reducing the need for watering in dry areas.

Supports local pollinators and beneficial insects.

Essentials

At a Glance

Plant Type

Perennial

Height

30 inches

Width

18 inches

Light

Partial Sun, Shade

Zones

6, 7, 8, 9

Water

Moist

Humidity

Moderate

Lifespan

Perennial

Native To

Himalayas

Toxicity

Yes

Planting

How to Grow

Tuck rhizomes 2-3 inches deep in moist, well-drained soil
Mist cuttings or water regularly during active growth
Plant in shaded or partially shaded areas for best results
Mulch to retain soil moisture and regulate temperature
Protect from strong winter winds and frost
Divide clumps every 3-4 years in early spring

Pro Tip

Ensure soil remains consistently moist and shaded for optimal growth.

Keep It Thriving

Care Guide

Do

Water regularly to keep soil moist 🌱
Mulch to conserve moisture and suppress weeds
Plant in shaded areas to prevent leaf scorch

Don't

Avoid direct sunlight which can scorch leaves ❌
Do not let soil dry out completely
Avoid heavy, compacted soils which hinder root growth

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

Shaded woodland borderMoist shady garden bed

Companion Plants

Hostas Ferns Astilbes Trilliums

Multiply

Propagation Methods

Good to Know

Common Questions

Himalayan Cobra Lily questions

What zones can Himalayan Cobra Lily grow in?

Himalayan Cobra Lily 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 Himalayan Cobra Lily deer resistant?

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

When does Himalayan Cobra Lily bloom?

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

Does Himalayan Cobra Lily need full sun?

Himalayan Cobra Lily does best in part shade.