Arnica griscomii subsp. griscomii
Arnica griscomii subsp. griscomii
Griscom's arnica is a rare subarctic perennial native to Newfoundland and Québec, requiring cool temperatures, consistently moist acidic soils, and partial shade to thrive. It is best suited for rock gardens or alpine-style plantings and does not tolerate heat or drought. This species has ethnobotanical and medicinal associations within the arnica genus and is a specialist collector's plant.
Care Level
High
Sun
Partial Shade
Water
Moderate
Growth Rate
Moderate
Mature Height
18″ – 36″
Soil
loam
Life Cycle
Perennial
Spacing
12″
Watering Schedule
Every 7-10 Days • Water Consistently To Keep Soil Evenly Moist But Never Waterlogged
Soil pH
5.5 – 7.5
Temperature
-10° – 85°F
Mature Spread
up to 24″
Root Depth
Medium
Foliage
Coarse
Native to
Attracts
Sources
Data: trefle, usda
No nurseries currently have this species in stock.