Arnica hardinae H. St. John
Scientific Name: Arnica hardinae H. St. John
Synonyms: Arnica cordifolia Hook. ssp. <i>genuina</i> Maguire, Arnica cordifolia Hook. var. <i>humilis</i> (Rydb.) Maguire, Arnica cordifolia Hook. var. <i>pumila</i> (Rydb.) Maguire, Arnica cordifolia Hook. var. <i>whitneyi</i> (Fernald) Maguire, Arnica hardinae H. St. John, Arnica humilis Rydb., Arnica paniculata A. Nelson, Arnica whitneyi Fernald
Classification: Plantae/ Tracheobionta / Spermatophyta / Magnoliophyta / Magnoliopsida / Asteridae / Asterales / Asteraceae / Compositae / Arnica L./ Arnica hardinae H. St. John

| General Information | |
|---|---|
| Usda Symbol | ARHA5 |
| Group | Dicot |
| Life Cycle | Perennial |
| Growth Habits | Forb/herb |
| Native Locations | ARHA5 |
Plant Guide
Use soil moisture sensors to measure the soil moisture of Arnica hardinae H. St. John.
Plant Traits
Growth Requirements
| Temperature, Minimum (°F) | -28 |
|---|---|
| Adapted to Coarse Textured Soils | Yes |
| Adapted to Fine Textured Soils | Yes |
| Adapted to Medium Textured Soils | Yes |
| Anaerobic Tolerance | None |
| CaCO3 Tolerance | Low |
| Cold Stratification Required | Yes |
| Drought Tolerance | Low |
| Fertility Requirement | Medium |
| Fire Tolerance | High |
| Frost Free Days, Minimum | 130 |
| Hedge Tolerance | High |
| Moisture Use | High |
| pH, Maximum | 8.0 |
| pH, Minimum | 6.0 |
| Planting Density per Acre, Maxim | 4800 |
| Planting Density per Acre, Minim | 1200 |
| Precipitation, Maximum | 35 |
| Precipitation, Minimum | 10 |
| Root Depth, Minimum (inches) | 6 |
| Salinity Tolerance | None |
| Shade Tolerance | Tolerant |
Morphology/Physiology
| After Harvest Regrowth Rate | Rapid |
|---|---|
| Toxicity | None |
| Resprout Ability | No |
| Shape and Orientation | Erect |
| Active Growth Period | Spring and Summer |
| Bloat | None |
| C:N Ratio | Low |
| Coppice Potential | No |
| Fall Conspicuous | No |
| Fire Resistant | No |
| Flower Color | Yellow |
| Flower Conspicuous | Yes |
| Foliage Color | Green |
| Foliage Porosity Summer | Porous |
| Foliage Porosity Winter | Porous |
| Fruit/Seed Color | White |
| Nitrogen Fixation | None |
| Low Growing Grass | No |
| Lifespan | Short |
| Leaf Retention | No |
| Known Allelopath | No |
| Height, Mature (feet) | 1.5 |
| Growth Rate | Rapid |
| Growth Form | Rhizomatous |
| Fruit/Seed Conspicuous | No |
| Foliage Texture | Coarse |
Reproduction
| Vegetative Spread Rate | Rapid |
|---|---|
| Small Grain | No |
| Seedling Vigor | High |
| Seed Spread Rate | Rapid |
| Fruit/Seed Period End | Fall |
| Seed per Pound | 220000 |
| Propagated by Tubers | No |
| Propagated by Sprigs | Yes |
| Propagated by Sod | No |
| Propagated by Seed | Yes |
| Propagated by Corm | Yes |
| Propagated by Container | Yes |
| Propagated by Bulb | No |
| Propagated by Bare Root | Yes |
| Fruit/Seed Persistence | No |
| Fruit/Seed Period Begin | Summer |
| Fruit/Seed Abundance | High |
| Commercial Availability | Contracting Only |
| Bloom Period | Late Spring |
| Propagated by Cuttings | Yes |
Suitability/Use
| Veneer Product | No |
|---|---|
| Pulpwood Product | No |
| Protein Potential | Medium |
| Post Product | No |
| Palatable Human | No |
| Palatable Graze Animal | Low |
| Palatable Browse Animal | Low |
| Nursery Stock Product | No |
| Naval Store Product | No |
| Lumber Product | No |
| Fodder Product | No |
| Christmas Tree Product | No |
| Berry/Nut/Seed Product | No |

