Arisaema thunbergii

Also Known As

Cobra Lily

Plant type

perennial, bulb / corm / tuber, aroid

size

H: 12"-24"
W: 8"-12"

planting zones

6a-9b

More Options

Arisaema thunbergii plant details

Arisaema thunbergii is a broadleaf deciduous perennial aroid bulb / corm / tuber with green foliage. In spring and summer black, green and purple flowers emerge. Grows well with mostly sun - shade and even moisture - regular water. Does well in average, rich and well-drained soil. A good option if you're seeking something verticillium wilt resistant.

CHARACTERISTICS OF Arisaema thunbergii

Plant type: perennial aroid bulb / corm / tuber
Plant family: araceae
Foliage: deciduous green
Mature size: 8 IN - 12 IN - wide, 12 IN - 24 IN - tall
Flowers: black, green and purple blooms in spring and summer

GROWING CONDITIONS for Arisaema thunbergii

USDA Zones: 6a - 9b
Sun exposure: mostly sun - shade
Watering frequency: even moisture - regular
Resistant to: deer and rabbit, verticillium wilt
Soil needs: average, rich and well-drained

Nursery contributed plant descriptions

From the southern islands of Japan, this has much-divided glossy leaves and a very long, black whip-like spadix snaking out from the purple-brown speckled spathe. Dramatic and always popular. Early mid-season. Needs rich well-drained soil in shade. Arisaema are known as cobra lilies or jack-in-the-pulpits. There are only two North American species but many in Asia. They grow in moist, shaded, forested habitats and are great for adding cool foliage and floral intrigue in the shade or woodland garden where they can rise up and through other shade plants. In colder climates they can be grown in pots and protected in winter. Keep just above freezing. In pots, plant in a moist but free-draining mix of coarse bark and pumice or perlite. Pull back on watering when dormant.