Index / Search / Mahonia nervosa
§1 Plant
Mahonia nervosa (Pursh) Nutt.
vernacular Cascade barberry — species · Berberidaceae
§2Habit & range
Habit and range
- Growth habit
- Shrub, Subshrub
- Duration
- Perennial
- Group
- Dicot
- Family
- Berberidaceae Juss.
- Genus
- Mahonia
§2a
Native status, by region
- CAN Canada Native
- L48 Lower 48 States Native
§2b
County-level range
· 29 counties across 2 states/territories§3Cultivation specs · USDA
Recorded by the USDA Plant Materials Program.
§3a
Tolerances
- Drought
- High
- Shade
- Low
- Moisture use
- Low
- Fire
- High
- Salinity
- None
- Anaerobic
- None
- CaCO₃
- Low
- Hedging
- Low
§3b
Climate & soil
- Cold tolerance
- -18 °F minimum
- Frost-free days
- 180 min.
- Precipitation
- 30–60 in/yr
- pH range
- 5–7.5
- Root depth
- 16 in min.
- Fertility need
- Low
- Soil texture
- coarse, medium
§3c
Form & growth
- Growth form
- Rhizomatous
- Growth rate
- Slow
- Lifespan
- Long
- Mature height
- 2 ft
- Height @ 20 y
- 2 ft
- Foliage texture
- Coarse
- Foliage colour
- Dark Green
- Porosity (summer)
- Dense
- Porosity (winter)
- Dense
- Flower colour
- Yellow
- Fruit colour
- Blue
- Fire resistant
- No
- N fixation
- None
- Toxicity
- None
§3d
Reproduction
- Bloom period
- Mid Spring
- Seed abundance
- Medium
- Seed begins
- Spring
- Seed ends
- Summer
- Spread rate
- Slow
- Stratify
- Yes
- Seeds / lb
- 23,000
- Propagation
- seed, bare root, container
§3e
Use & availability
- Commercial availability
- Contracting Only
- Nursery stock
- Yes
- Browse palatability
- Medium
- Graze palatability
- Low
- Palatable, human
- No
- Protein potential
- Low
- Lumber
- No
- Christmas tree
- No
§4Counties, by state
Recorded in 29 counties across 2 states/territories.
Idaho view state ↗ 4 N ▾
Oregon view state ↗ 25 N ▾
- Benton 41003
- Clackamas 41005
- Clatsop 41007
- Coos 41011
- Curry 41015
- Deschutes 41017
- Douglas 41019
- Hood River 41027
- Jackson 41029
- Jefferson 41031
- Josephine 41033
- Klamath 41035
- Lane 41039
- Lincoln 41041
- Linn 41043
- Marion 41047
- Multnomah 41051
- Polk 41053
- Tillamook 41057
- Umatilla 41059
- Union 41061
- Wallowa 41063
- Wasco 41065
- Washington 41067
- Yamhill 41071
§5Sources & provenance
USDA PLANTS
Symbol, taxonomy, distribution, cultivation specs, native status. Public domain.
plants.usda.gov/MANE2 ↗GBIF Backbone
Canonical taxonomic identity, synonym resolution, cross-refs. CC0.
gbif.org/species/3033875 ↗Record version
Cached and built locally. Source version on this record:
usda-plants-mt-2026-05-26
fetched 2026-05-26T14:17:10Z