Species

perennialN. America Native

Black Jack-in-the-Pulpit

The Story

Plant Bio

Arisaema triphyllum, commonly known as Jack-in-the-pulpit, is a perennial woodland plant distinguished by its trifoliate leaves and hooded spathe that encloses a spadix, typically displaying green and purple hues.

The 'Black Jack' cultivar features striking, dark almost black foliage that provides a dramatic contrast in shaded gardens and enhances its ornamental appeal.

Uses & Benefits:

Provides unique, exotic foliage and flowers in shaded gardens.

Toxicity deters deer and rabbits from nibbling.

Supports native woodland ecosystems by thriving in shaded, moist habitats.

SpeciesArisaema triphyllumJack-in-the-pulpit

Essentials

At a Glance

Plant Type

Perennial

Height

18 inches

Width

12 inches

Light

Partial Sun, Shade

Zones

4, 5, 6, 7, 8, 9

Water

Moist

Humidity

High

Lifespan

Perennial

Native To

North America

Toxicity

High

Bloom period

Late spring

In flower about 1 month of the year

Planting

How to Grow

Choose a shaded spot with moist, well-drained soil.
Tuck bulbs 4-6 inches deep in fall or early spring.
Water regularly to keep soil moist but not waterlogged.
Mulch around the plant to retain moisture and regulate temperature.
Mist cuttings or divide in early spring for propagation.
Allow foliage to die back naturally in late summer.

Pro Tip

Plant bulbs in fall for best spring bloom; ensure soil stays moist.

Keep It Thriving

Care Guide

Do

Water consistently to keep soil moist 🌱
Apply mulch to conserve moisture
Dividing bulbs every 3-4 years for healthy growth

Don't

Avoid overwatering to prevent bulb rot ❌
Do not expose to direct, harsh sunlight
Do not disturb dormant bulbs in winter

Seasonal Care Calendar

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

Ferns Hostas Astilbes Trilliums

Multiply

Propagation Methods

Good to Know

Common Questions

Black Jack-in-the-Pulpit questions

What zones can Black Jack-in-the-Pulpit grow in?

Black Jack-in-the-Pulpit is hardy in USDA Zones 4–9. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.

Is Black Jack-in-the-Pulpit deer resistant?

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

When does Black Jack-in-the-Pulpit bloom?

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

Does Black Jack-in-the-Pulpit need full sun?

Black Jack-in-the-Pulpit does best in part shade.