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Leopard's-Bane Arnica montana

Phonetic Spelling
AR-nih-kah mon-TAY-nah
This plant has high severity poison characteristics.
See below
Description

Leopards Bane is a perennial herb in the aster family native to Europe. It grows .5 to 2 feet tall with basal downy leaves and flowers that occur May to Aug. The yellow-orange ray flowers surround the yellow disc florets followed by achenes.

It tolerates most soils if they are well-drained in full sun to partial shade but prefers slightly alkaline moist sandy loams. It is not drought tolerant.

 

See this plant in the following landscape:
Cultivars / Varieties:
  • Arnica Acaulis
Arnica Acaulis
Tags:
#poisonous#perennials#yellow flowers#rock gardens#border planting#bedding plants#contact dermatitis
 
Cultivars / Varieties:
  • Arnica Acaulis
Arnica Acaulis
Tags:
#poisonous#perennials#yellow flowers#rock gardens#border planting#bedding plants#contact dermatitis
  • Attributes:
    Genus:
    Arnica
    Species:
    montana
    Family:
    Asteraceae
    Uses (Ethnobotany):
    Used in herbal medicine for centuries.
    Recommended Propagation Strategy:
    Seed
    Country Or Region Of Origin:
    Europe
  • Whole Plant Traits:
    Plant Type:
    Herbaceous Perennial
    Poisonous
    Woody Plant Leaf Characteristics:
    Deciduous
  • Cultural Conditions:
    Light:
    Full sun (6 or more hours of direct sunlight a day)
    Partial Shade (Direct sunlight only part of the day, 2-6 hours)
    Soil Texture:
    Clay
    Loam (Silt)
    Sand
    Soil pH:
    Alkaline (>8.0)
    Neutral (6.0-8.0)
    Soil Drainage:
    Good Drainage
    Moist
    USDA Plant Hardiness Zone:
    4a, 4b, 5b, 5a, 6b, 6a, 7b, 7a, 8a, 8b, 9b, 9a
  • Fruit:
    Fruit Type:
    Achene
  • Flowers:
    Flower Color:
    Gold/Yellow
    Flower Inflorescence:
    Head
    Flower Bloom Time:
    Spring
    Summer
    Flower Shape:
    Radial
    Flower Description:
    Flowers are yellow rays surrounding yellow disc florets in late spring to early summer.
  • Leaves:
    Woody Plant Leaf Characteristics:
    Deciduous
    Leaf Type:
    Simple
    Leaf Arrangement:
    Opposite
    Hairs Present:
    No
    Leaf Description:
    While basal leaves are clustered, the stem leaves are opposite and simple.
  • Stem:
    Stem Is Aromatic:
    No
  • Landscape:
    Landscape Theme:
    Rock Garden
    Design Feature:
    Border
    Problems:
    Contact Dermatitis
    Poisonous to Humans
    Problem for Children
  • Poisonous to Humans:
    Poison Severity:
    High
    Poison Symptoms:
    Poisonous through dermatitis and ingestion; Poisonous parts: roots and flowers. Symptoms may include: Skin irritation upon contact; after ingestion, heart palpitation, vomiting, drowsiness, shortness of breath, and coma in children.
    Poison Toxic Principle:
    Helenalin and its esters
    Causes Contact Dermatitis:
    Yes
    Poison Part:
    Flowers
    Roots