Hairy Arnica (Mollis)

The Hairy Arnica (Mollis) is generally described as a perennial forb/herb. This is native to the U.S. (United States) has its most active growth period in the spring and summer . The Hairy Arnica (Mollis) has green foliage and inconspicuous yellow flowers, with a moderate amount of conspicuous brown fruits or seeds. The greatest bloom is usually observed in the summer, with fruit and seed production starting in the fall and continuing until fall. Leaves are not retained year to year. The Hairy Arnica (Mollis) has a moderate life span relative to most other plant species and a slow growth rate. At maturity, the typical Hairy Arnica (Mollis) will reach up to 2 feet high, with a maximum height at 20 years of 0 inches.

The Hairy Arnica (Mollis) is not commonly available from nurseries, garden stores and other plant dealers and distributors. It can be propagated by bare root, seed. It has a slow ability to spread through seed production and the seedlings have medium vigor. Note that cold stratification is not required for seed germination and the plant cannot survive exposure to temperatures below -33°F. has medium tolerance to drought and restricted water conditions.

Plant Basics
Category
Growth Rate Slow
General Type Forb/herb
Growth Period Spring, Summer
Growth Duration Perennial
Lifespan Moderate
Plant Nativity Native to U.S.
Commercial Availability No Known Source
Physical Characteristics
Bloom Period Summer
Displays Fall Colors No
Shape/Growth Form Single Stem
Drought Tolerance Medium
Shade Tolerance Intermediate
Height When Mature 2
Vegetative Spread None
Flower Color Yellow
Flower Conspicuousness Yes
Fruit/Seed Abundance Medium
Fruit/Seed Seasonality Fall Fall
Seed Spread Rate Slow
Gardening Characteristics
Propagations (Ways to Grow) Bare Root, Seed
Moisture Requirements High
Cold Stratification Required No
Minimum Temperature -33
Soil Depth for Roots 2
Toxic to Nearby Plants No
Toxic to Livestock No
After-Harvest Regrowth Rate Slow
After-Harvest Resprout Ability No
Responds to Coppicing No
Growth Requirements
pH Range 5–7 pH
Precipitation Range 10–10 inches/yr
Planting Density 11000–19000 indiv./acre
Soil Textures Coarse, Medium
Soil Depth for Roots 2
Minimum Frost-Free Days 80 day(s)
Salinity Tolerance None
CaCO3 Tolerance Medium
Sustainability & Use
Leaf Retention No
Palatability Low
Fire Resistant No
Causes Livestock Bloating None

Source: USDA, NRCS, PLANTS Database, plants.usda.gov.
National Plant Data Center, Baton Rouge, LA 70874-4490 USA