Cobra Lily, Jack in the Pulpit

Arisaema nepenthoides

Family: Araceae (a-RAY-see-ee) (Info)
Genus: Arisaema (air-uh-SEE-muh) (Info)
Species: nepenthoides (nep-enth-OY-deez) (Info)




Foliage Color:

Unknown - Tell us

Bloom Characteristics:

Unknown - Tell us

Water Requirements:

Average Water Needs; Water regularly; do not overwater

Requires consistently moist soil; do not let dry out between waterings

Where to Grow:

Unknown - Tell us


18-24 in. (45-60 cm)


9-12 in. (22-30 cm)

12-15 in. (30-38 cm)

15-18 in. (38-45 cm)


USDA Zone 6b: to -20.5 C (-5 F)

USDA Zone 7a: to -17.7 C (0 F)

USDA Zone 7b: to -14.9 C (5 F)

USDA Zone 8a: to -12.2 C (10 F)

USDA Zone 8b: to -9.4 C (15 F)

USDA Zone 9a: to -6.6 C (20 F)

USDA Zone 9b: to -3.8 C (25 F)

Sun Exposure:

Light Shade


Unknown - Tell us

Bloom Color:

Dark Purple/Black

White/Near White

Bloom Time:

Mid Spring

Late Spring/Early Summer




Other details:

Unknown - Tell us

Soil pH requirements:

5.6 to 6.0 (acidic)

6.1 to 6.5 (mildly acidic)

6.6 to 7.5 (neutral)

Patent Information:

Unknown - Tell us

Propagation Methods:

By dividing rhizomes, tubers, corms or bulbs (including offsets)

From seed; direct sow outdoors in fall

From seed; winter sow in vented containers, coldframe or unheated greenhouse

From seed; sow indoors before last frost

From seed; direct sow after last frost

From seed; germinate in a damp paper towel

Seed Collecting:

Allow unblemished fruit to ripen; clean and dry seeds

Wear gloves to protect hands when handling seeds


This plant has been said to grow in the following regions:

Seattle, Washington

Gardeners' Notes:

No details have been posted.