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Aconitum Species, Japanese Monkshood

Aconitumjaponicum

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Aconitum japonicum by gregr18
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Family
Ranunculaceae (ra-nun-kew-LAY-see-ee)
Info
Genus
Aconitum (a-kon-EYE-tum)
Info
Species
japonicum (juh-PON-ih-kum)
Info
Synonym
Aconitum deflexum
Sun Exposure
Light Shade
Partial to Full Shade
Foliage
Deciduous
Herbaceous
Smooth
Height
36-48 in. (90-120 cm)
Spacing
12-15 in. (30-38 cm)
15-18 in. (38-45 cm)
Hardiness
USDA Zone 4a: to -34.4 °C (-30 °F)
USDA Zone 4b: to -31.6 °C (-25 °F)
USDA Zone 5a: to -28.8 °C (-20 °F)
USDA Zone 5b: to -26.1 °C (-15 °F)
USDA Zone 6a: to -23.3 °C (-10 °F)
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)
Danger
All parts of plant are poisonous if ingested
Handling plant may cause skin irritation or allergic reaction
Bloom Color
Dark Blue
Medium Blue
Blue-Violet
Bloom Time
Late Summer/Early Fall
Mid Fall
Other Details
Category
Perennials
Water Requirements
Requires consistently moist soil; do not let dry out between waterings
Foliage Color

Unknown - Tell us

Where to Grow

Unknown - Tell us

Bloom Characteristics

Unknown - Tell us

Bloom Size

Unknown - Tell us

Other details

Unknown - Tell us

Soil pH requirements
5.1 to 5.5 (strongly acidic)
5.6 to 6.0 (acidic)
6.1 to 6.5 (mildly acidic)
Patent Information
Non-patented
Propagation Methods
By dividing the rootball
From seed; direct sow outdoors in fall
From seed; winter sow in vented containers, coldframe or unheated greenhouse
From seed; stratify if sowing indoors
Seed Collecting
Allow pods to dry on plant; break open to collect seeds
Regional

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

Bridgewater, Massachusetts

Portland, Oregon

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2 members have or want this plant for trade

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Veshengo
(Zone 8a) | October 2006 | neutral

The Japanese name is Yama-tori-kabuto and it grows in the hills and mountains of Japan.

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