Arisaema Species, Jack-in-the-Pulpit, Japanese Cobra Lily
Arisaemayamatense

Synonym:Arisaema japonicum var. yamatense

Synonym:Arisaema yamatense var. integrum

Category
Bulbs
Perennials

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

Sun Exposure
Light Shade
Partial to Full Shade
Full Shade

Foliage
Grown for foliage

Foliage Color

Height
12-18 in. (30-45 cm)

Spacing
12-15 in. (30-38 cm)

Hardiness
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)
USDA Zone 10a: to -1.1 °C (30 °F)
USDA Zone 10b: to 1.7 °C (35 °F)

Where to Grow
Can be grown as an annual

Danger
Seed is poisonous if ingested

Bloom Color
Pale Green
Dark Purple/Black
Cream/Tan

Bloom Characteristics

Bloom Size

Bloom Time
Late Winter/Early Spring

Other details

Soil pH requirements
5.6 to 6.0 (acidic)
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)

Patent Information

Propagation Methods
By dividing rhizomes, tubers, corms or bulbs (including offsets)
From seed; winter sow in vented containers, coldframe or unheated greenhouse

Seed Collecting
Remove fleshy coating on seeds before storing
Wear gloves to protect hands when handling seeds