Index / Search / Juncus arcticus ssp. littoralis
§1 Plant — subspecies · Juncaceae
Juncus arcticus Willd. ssp. littoralis (Engelm.) Hultén
vernacular mountain rush
§2Habit & range
Habit and range
- Growth habit
- Graminoid
- Duration
- Perennial
- Group
- Monocot
- Family
- Juncaceae Juss.
- Genus
- Juncus
§2a
Native status, by region
- AK Alaska Native
- CAN Canada Native
- GL Greenland Native
- L48 Lower 48 States Native
- SPM St. Pierre & Miquelon Native
§3Cultivation specs · USDA
Recorded by the USDA Plant Materials Program.
§3a
Tolerances
- Drought
- Low
- Shade
- Medium
- Moisture use
- High
- Fire
- High
- Salinity
- High
- Anaerobic
- High
- CaCO₃
- Low
- Hedging
- None
§3b
Climate & soil
- Cold tolerance
- -43 °F minimum
- Frost-free days
- 90 min.
- pH range
- 6–9
- Root depth
- 20 in min.
- Fertility need
- Low
- Soil texture
- medium, fine
§3c
Form & growth
- Growth form
- Rhizomatous
- Growth rate
- Rapid
- Lifespan
- Long
- Mature height
- 4 ft
- Foliage texture
- Fine
- Foliage colour
- Green
- Porosity (summer)
- Dense
- Porosity (winter)
- Porous
- Flower colour
- Brown
- Fruit colour
- Brown
- Fire resistant
- No
- N fixation
- None
- Toxicity
- None
§3d
Reproduction
- Bloom period
- Early Summer
- Seed abundance
- High
- Seed begins
- Summer
- Seed ends
- Summer
- Spread rate
- Slow
- Stratify
- No
- Seeds / lb
- 3,000,000
- Propagation
- seed, sprigs
§3e
Use & availability
- Commercial availability
- Routinely Available
- Nursery stock
- No
- Browse palatability
- Medium
- Graze palatability
- Medium
- Palatable, human
- No
- Protein potential
- Low
- Lumber
- No
- Christmas tree
- No
§4Montana distribution
Recorded in 30 of 56 Montana counties.
Native · 30 counties
- Beaverhead 30001
- Blaine 30005
- Broadwater 30007
- Carbon 30009
- Carter 30011
- Cascade 30013
- Daniels 30019
- Dawson 30021
- Fallon 30025
- Fergus 30027
- Gallatin 30031
- Golden Valley 30037
- Granite 30039
- Jefferson 30043
- Madison 30057
- McCone 30055
- Musselshell 30065
- Park 30067
- Petroleum 30069
- Phillips 30071
- Powell 30077
- Ravalli 30081
- Richland 30083
- Sheridan 30091
- Silver Bow 30093
- Sweet Grass 30097
- Teton 30099
- Valley 30105
- Wibaux 30109
- Yellowstone 30111
§5Sources & provenance
USDA PLANTS
Symbol, taxonomy, distribution, cultivation specs, native status. Public domain.
plants.usda.gov/JUARL ↗GBIF Backbone
Canonical taxonomic identity, synonym resolution, cross-refs. CC0.
gbif.org/species/4203694 ↗Record version
Cached and built locally. Source version on this record:
usda-plants-mt-2026-05-25
fetched 2026-05-25T16:28:53Z