Index / Search / Rubus ursinus
§1 Plant
Rubus ursinus Cham. & Schltdl.
vernacular California blackberry — species · Rosaceae
§2Habit & range
Habit and range
- Growth habit
- Subshrub
- Duration
- Perennial
- Group
- Dicot
- Family
- Rosaceae Juss.
- Genus
- Rubus
§2a
Native status, by region
- CAN Canada Native
- L48 Lower 48 States Native
§2b
County-level range
· 51 counties across 3 states/territories§3Cultivation specs · USDA
Recorded by the USDA Plant Materials Program.
§3a
Tolerances
- Drought
- Medium
- Shade
- High
- Moisture use
- Medium
- Fire
- High
- Salinity
- None
- Anaerobic
- None
- CaCO₃
- Medium
- Hedging
- None
§3b
Climate & soil
- Cold tolerance
- 7 °F minimum
- Frost-free days
- 190 min.
- Precipitation
- 14–24 in/yr
- pH range
- 6–7.5
- Root depth
- 14 in min.
- Fertility need
- Medium
- Soil texture
- coarse, medium, fine
§3c
Form & growth
- Growth form
- Thicket Forming
- Growth rate
- Rapid
- Lifespan
- Short
- Mature height
- 2 ft
- Height @ 20 y
- 2 ft
- Foliage texture
- Coarse
- Foliage colour
- Green
- Porosity (summer)
- Dense
- Porosity (winter)
- Porous
- Flower colour
- White
- Fruit colour
- Black
- Fire resistant
- No
- N fixation
- None
- Toxicity
- None
§3d
Reproduction
- Bloom period
- Early Spring
- Seed abundance
- Medium
- Seed begins
- Spring
- Seed ends
- Summer
- Spread rate
- Slow
- Stratify
- No
- Seeds / lb
- 327,000
- Propagation
- seed, bare root, container, sprigs
§3e
Use & availability
- Commercial availability
- Contracting Only
- Nursery stock
- No
- Browse palatability
- High
- Graze palatability
- Low
- Palatable, human
- No
- Protein potential
- Low
- Lumber
- No
- Christmas tree
- No
§4Counties, by state
Recorded in 51 counties across 3 states/territories.
Oregon view state ↗ 24 N ▾
- Benton 41003
- Clackamas 41005
- Clatsop 41007
- Coos 41011
- Curry 41015
- 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
Washington view state ↗ 22 N ▾
- Chelan 53007
- Clallam 53009
- Clark 53011
- Cowlitz 53015
- Grays Harbor 53027
- Island 53029
- King 53033
- Kitsap 53035
- Kittitas 53037
- Klickitat 53039
- Lewis 53041
- Mason 53045
- Pacific 53049
- Pierce 53053
- San Juan 53055
- Skagit 53057
- Skamania 53059
- Snohomish 53061
- Thurston 53067
- Wahkiakum 53069
- Walla Walla 53071
- Whatcom 53073
§5Sources & provenance
USDA PLANTS
Symbol, taxonomy, distribution, cultivation specs, native status. Public domain.
plants.usda.gov/RUUR ↗GBIF Backbone
Canonical taxonomic identity, synonym resolution, cross-refs. CC0.
gbif.org/species/2990646 ↗Record version
Cached and built locally. Source version on this record:
usda-plants-mt-2026-05-26
fetched 2026-05-26T14:42:51Z