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
Other: Deep bluish-purple.
Bloom Size: Under 1"
Flower Time: Late summer or early fall
Underground structures: Rhizome
Wildlife Attractant: Bees
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

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
  • 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.

« Add a new plant to the database

« The Plants Database Front Page

Today's site banner is by Murky and is called "Deep Fuchsia Color Azalea Blooms"

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.