Arnica Species, Hairy Arnica, Soft Arnica, Subalpine Arnica
Arnicamollis

Synonym:Arnica mollis var. silvatica

Synonym:Arnica silvatica

Category
Alpines and Rock Gardens
Perennials

Water Requirements
Drought-tolerant; suitable for xeriscaping

Sun Exposure
Partial to Full Shade

Foliage
Succulent

Foliage Color

Height
18-24 in. (45-60 cm)

Spacing
3-6 in. (7-15 cm)

Hardiness
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)
USDA Zone 9a: to -6.6 °C (20 °F)
USDA Zone 9b: to -3.8 °C (25 °F)
USDA Zone 10a: to -1.1 °C (30 °F)
USDA Zone 10b: to 1.7 °C (35 °F)

Where to Grow

Danger
All parts of plant are poisonous if ingested

Bloom Color
Bright Yellow

Bloom Characteristics

Bloom Size

Bloom Time
Mid Summer

Other details
May be a noxious weed or invasive

Soil pH requirements
4.6 to 5.0 (highly acidic)
5.1 to 5.5 (strongly acidic)
5.6 to 6.0 (acidic)
6.1 to 6.5 (mildly acidic)

Patent Information

Propagation Methods

Seed Collecting