Index / Search / Carex douglasii
§1 Plant
Carex douglasii Boott
vernacular Douglas' sedge — species · Cyperaceae
§2Habit & range
Habit and range
- Growth habit
- Graminoid
- Duration
- Perennial
- Group
- Monocot
- Family
- Cyperaceae Juss.
- Genus
- Carex
§2a
Native status, by region
- CAN Canada Native
- L48 Lower 48 States Native
§2b
County-level range
· 193 counties across 15 states/territories§3Cultivation specs · USDA
Recorded by the USDA Plant Materials Program.
§3a
Tolerances
- Drought
- Medium
- Shade
- High
- Moisture use
- Medium
- Fire
- High
- Salinity
- Medium
- Anaerobic
- Medium
- CaCO₃
- Medium
- Hedging
- None
§3b
Climate & soil
- Cold tolerance
- -33 °F minimum
- Frost-free days
- 85 min.
- Precipitation
- 14–24 in/yr
- pH range
- 6–8.5
- Root depth
- 8 in min.
- Fertility need
- Low
- Soil texture
- coarse, medium, fine
§3c
Form & growth
- Growth form
- Rhizomatous
- Growth rate
- Slow
- Lifespan
- Long
- Mature height
- 1.5 ft
- Foliage texture
- Fine
- Foliage colour
- Green
- Porosity (summer)
- Porous
- Porosity (winter)
- Porous
- Flower colour
- Green
- Fruit colour
- Brown
- Fire resistant
- No
- N fixation
- None
- Toxicity
- None
§3d
Reproduction
- Bloom period
- Late Spring
- Seed abundance
- Low
- Seed begins
- Summer
- Seed ends
- Summer
- Spread rate
- Slow
- Stratify
- Yes
- Propagation
- seed, bare root, sprigs
§3e
Use & availability
- Commercial availability
- No Known Source
- Nursery stock
- No
- Browse palatability
- Low
- Graze palatability
- Medium
- Palatable, human
- No
- Protein potential
- Medium
- Lumber
- No
- Christmas tree
- No
§4Counties, by state
Recorded in 193 counties across 15 states/territories.
Arizona view state ↗ 2 N ▾
California view state ↗ 22 N ▾
- Alpine 06003
- El Dorado 06017
- Inyo 06027
- Kern 06029
- Lake 06033
- Lassen 06035
- Mariposa 06043
- Modoc 06049
- Mono 06051
- Nevada 06057
- Placer 06061
- Plumas 06063
- Riverside 06065
- San Benito 06069
- San Diego 06073
- San Luis Obispo 06079
- Santa Barbara 06083
- Shasta 06089
- Siskiyou 06093
- Tulare 06107
- Tuolumne 06109
- Ventura 06111
Colorado view state ↗ 21 N ▾
- Alamosa 08003
- Boulder 08013
- Clear Creek 08019
- Conejos 08021
- Costilla 08023
- Denver 08031
- El Paso 08041
- Garfield 08045
- Gilpin 08047
- Gunnison 08051
- Huerfano 08055
- Jefferson 08059
- Larimer 08069
- Mineral 08079
- Moffat 08081
- Montrose 08085
- Park 08093
- Pitkin 08097
- Rio Grande 08105
- Saguache 08109
- Teller 08119
Idaho view state ↗ 25 N ▾
- Ada 16001
- Bannock 16005
- Bear Lake 16007
- Blaine 16013
- Boise 16015
- Butte 16023
- Camas 16025
- Canyon 16027
- Caribou 16029
- Cassia 16031
- Clark 16033
- Custer 16037
- Elmore 16039
- Fremont 16043
- Gooding 16047
- Idaho 16049
- Latah 16057
- Lemhi 16059
- Lincoln 16063
- Madison 16065
- Owyhee 16073
- Payette 16075
- Teton 16081
- Twin Falls 16083
- Valley 16085
Missouri view state ↗ 1 N ▾
Montana view state ↗ 16 N ▾
Nebraska view state ↗ 7 N ▾
Nevada view state ↗ 14 N ▾
New Mexico view state ↗ 7 N ▾
North Dakota view state ↗ 11 N ▾
Oregon view state ↗ 12 N ▾
South Dakota view state ↗ 3 N ▾
Utah view state ↗ 23 N ▾
- Beaver 49001
- Box Elder 49003
- Cache 49005
- Daggett 49009
- Duchesne 49013
- Emery 49015
- Garfield 49017
- Iron 49021
- Juab 49023
- Millard 49027
- Morgan 49029
- Rich 49033
- Salt Lake 49035
- Sanpete 49039
- Sevier 49041
- Summit 49043
- Tooele 49045
- Uintah 49047
- Utah 49049
- Wasatch 49051
- Washington 49053
- Wayne 49055
- Weber 49057
Washington view state ↗ 14 N ▾
§5Sources & provenance
USDA PLANTS
Symbol, taxonomy, distribution, cultivation specs, native status. Public domain.
plants.usda.gov/CADO2 ↗GBIF Backbone
Canonical taxonomic identity, synonym resolution, cross-refs. CC0.
gbif.org/species/2729804 ↗Record version
Cached and built locally. Source version on this record:
usda-plants-mt-2026-05-26
fetched 2026-05-26T20:46:58Z