General Plant Information (Edit)
Plant Habit: Herb/Forb
Life cycle: Perennial
Sun Requirements: Full Sun to Partial Shade
Water Preferences: Mesic
Soil pH Preferences: Slightly acid (6.1 – 6.5)
Neutral (6.6 – 7.3)
Slightly alkaline (7.4 – 7.8)
Minimum cold hardiness: Zone 4a -34.4 °C (-30 °F) to -31.7 °C (-25 °F)
Maximum recommended zone: Zone 8b
Plant Height: 24 to 36 inches
Plant Spread: 18 to 24 inches
Leaves: Deciduous
Flowers: Showy
Flower Color: Blue
Purple
Other: Deep bluish-purple.
Bloom Size: Under 1"
Flower Time: Late summer or early fall
Underground structures: Rhizome
Wildlife Attractant: Bees
Butterflies
Resistances: Deer Resistant
Rabbit Resistant
Toxicity: Leaves are poisonous
Roots are poisonous
Fruit is poisonous
Other: All parts of plant are posionous.
Propagation: Other methods: Division
Pollinators: Bees

Image
Common names
  • Japanese Monkshood

Photo Gallery

Photo Courtesy of Shikoku Garden Inc.
  • Uploaded by Joy
Location: Mt.Furo in Tanzawa Mountains, Honshu, Japan
Photo courtesy of:Σ64

Photo courtesy of:Σ64

Photo courtesy of:Σ64

Photo courtesy of:Σ64

Photo courtesy of:Σ64

Photo courtesy of:Koichi Oda

Photo courtesy of:Σ64
Comments:
  • Posted by elforestero (foothills of Mt Fuji) on Jun 5, 2021 12:16 AM concerning plant:
    Aconitum japonicum is highly poisonous. It is abundant in the forests north of Mt Fuji.

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