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

Arisaemayamatense

Family
Araceae (a-RAY-see-ee)
Genus
Arisaema (air-uh-SEE-muh)
Species
yamatense (yam-a-TEN-see)
Synonym
Arisaema japonicum var. yamatense
Arisaema yamatense var. integrum
Sun Exposure
Light Shade
Partial to Full Shade
Full Shade
Foliage
Grown for foliage
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)
Danger
Seed is poisonous if ingested
Bloom Color
Pale Green
Dark Purple/Black
Cream/Tan
Bloom Time
Late Winter/Early Spring
Other Details
Category
Bulbs
Perennials
Water Requirements
Requires consistently moist soil; do not let dry out between waterings
Foliage Color
Where to Grow
Can be grown as an annual
Bloom Characteristics
Bloom Size
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
Regional

This plant is said to grow outdoors in the following regions:

San Leandro, California

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Gardener's Notes:

0
positive
0
neutral
0
negative
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