Asteraceae
Arnica griscomii subsp. frigida
Arnica griscomii subsp. frigida
Also known as Arnica louiseana var. mendenhallii, Arnica louiseana var. pilosa, Arnica louiseana var. frigida, Arnica frigida
Flowering Plants · Edibles & Herbs · Native Plants · Arnica · Arctic · Subarctic · Alpine · Perennial · Medicinal · Alaska Native · Rare · Asteraceae · Specialist
This cold-hardy arctic arnica subspecies is native to Alaska, the Northwest Territories, British Columbia, and the Russian Far East, demanding cool to frigid climates and moist, humus-rich soils with partial shade. It is extremely challenging to cultivate outside its native subarctic range and is best attempted by experienced alpine gardeners. A true specialist plant, it produces cheerful yellow daisy-like flowers and shares the medicinal heritage of the arnica genus.
Growing conditions
The details behind the basics
- Daily light
- 3 hours
- Watering
- Water consistently to maintain evenly moist, cool soil; do not allow to dry out · Every 7-10 days
- Maintenance
- High
- Soil
- loam
- Soil pH
- 5.5–7.5
- Temperature
- -10°F to 85°F
- Cycle
- Perennial
Hardiness
USDA 5a-9b
Form & growth
Mature size and habit
- Mature height
- 18 in – 3 ft
- Spread
- 2 ft
- Spacing
- 12 in apart
- Growth rate
- Moderate
- Root depth
- Medium
- Flowers
- Yes
- Foliage
- Coarse
Ecology & origin
Where it belongs and what it brings
- Native to
- Alaska, British Columbia, Kamchatka, Magadan, Northwest Territorie, Yakutskiya, Yukon
- Attracts
- Bees, Butterflies
Sources: trefle, usda
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