Index / Search / Astragalus purshii
§1 Plant
Astragalus purshii Douglas ex Hook.
vernacular woollypod milkvetch — species · Fabaceae
§2Habit & range
Habit and range
- Growth habit
- Forb/herb
- Duration
- Perennial
- Group
- Dicot
- Family
- Fabaceae Lindl.
- Genus
- Astragalus
§2a
Native status, by region
- CAN Canada Native
- L48 Lower 48 States Native
§2b
County-level range
· 190 counties across 11 states/territories§3Cultivation specs · USDA
Recorded by the USDA Plant Materials Program.
§3a
Tolerances
- Drought
- High
- Shade
- High
- Moisture use
- Low
- Fire
- Medium
- Salinity
- Low
- Anaerobic
- None
- CaCO₃
- Medium
- Hedging
- None
§3b
Climate & soil
- Cold tolerance
- -33 °F minimum
- Frost-free days
- 80 min.
- Precipitation
- 10–20 in/yr
- pH range
- 5.6–7.5
- Root depth
- 10 in min.
- Fertility need
- Low
- Soil texture
- coarse, medium
§3c
Form & growth
- Growth form
- Single Crown
- Growth rate
- Moderate
- Lifespan
- Moderate
- Mature height
- 0.6 ft
- Foliage texture
- Fine
- Foliage colour
- Gray-Green
- Porosity (summer)
- Dense
- Porosity (winter)
- Porous
- Flower colour
- White
- Fruit colour
- Black
- Fire resistant
- No
- N fixation
- Medium
- Toxicity
- Slight
§3d
Reproduction
- Bloom period
- Mid Spring
- Seed abundance
- High
- Seed begins
- Spring
- Seed ends
- Summer
- Spread rate
- Moderate
- Stratify
- No
- Seeds / lb
- 120,000
- Propagation
- seed
§3e
Use & availability
- Commercial availability
- No Known Source
- Nursery stock
- No
- Browse palatability
- Low
- Graze palatability
- Low
- Palatable, human
- No
- Protein potential
- Medium
- Lumber
- No
- Christmas tree
- No
§4Counties, by state
Recorded in 190 counties across 11 states/territories.
California view state ↗ 25 N ▾
- Alpine 06003
- Amador 06005
- Colusa 06011
- Glenn 06021
- Inyo 06027
- Kern 06029
- Lake 06033
- Lassen 06035
- Mendocino 06045
- Modoc 06049
- Mono 06051
- Nevada 06057
- Plumas 06063
- Riverside 06065
- San Benito 06069
- San Bernardino 06071
- Santa Barbara 06083
- Shasta 06089
- Sierra 06091
- Siskiyou 06093
- Tehama 06103
- Trinity 06105
- Tulare 06107
- Tuolumne 06109
- Ventura 06111
Colorado view state ↗ 5 N ▾
Idaho view state ↗ 30 N ▾
- Ada 16001
- Adams 16003
- Bannock 16005
- Bear Lake 16007
- Bingham 16011
- Blaine 16013
- Boise 16015
- Butte 16023
- Canyon 16027
- Caribou 16029
- Cassia 16031
- Clark 16033
- Custer 16037
- Elmore 16039
- Franklin 16041
- Fremont 16043
- Gem 16045
- Gooding 16047
- Idaho 16049
- Kootenai 16055
- Lemhi 16059
- Lincoln 16063
- Madison 16065
- Nez Perce 16069
- Owyhee 16073
- Payette 16075
- Power 16077
- Teton 16081
- Twin Falls 16083
- Washington 16087
Montana view state ↗ 39 N ▾
- Beaverhead 30001
- Big Horn 30003
- Blaine 30005
- Broadwater 30007
- Carbon 30009
- Carter 30011
- Cascade 30013
- Chouteau 30015
- Custer 30017
- Daniels 30019
- Dawson 30021
- Fergus 30027
- Gallatin 30031
- Garfield 30033
- Glacier 30035
- Golden Valley 30037
- Granite 30039
- Hill 30041
- Jefferson 30043
- Lewis and Clark 30049
- Liberty 30051
- Madison 30057
- Meagher 30059
- Missoula 30063
- Musselshell 30065
- Park 30067
- Petroleum 30069
- Phillips 30071
- Powder River 30075
- Roosevelt 30085
- Rosebud 30087
- Sheridan 30091
- Stillwater 30095
- Teton 30099
- Toole 30101
- Treasure 30103
- Valley 30105
- Wibaux 30109
- Yellowstone 30111
Nevada view state ↗ 17 N ▾
North Dakota view state ↗ 5 N ▾
Oregon view state ↗ 22 N ▾
South Dakota view state ↗ 2 N ▾
Utah view state ↗ 8 N ▾
Washington view state ↗ 17 N ▾
Wyoming view state ↗ 20 N ▾
§5Sources & provenance
USDA PLANTS
Symbol, taxonomy, distribution, cultivation specs, native status. Public domain.
plants.usda.gov/ASPU9 ↗GBIF Backbone
Canonical taxonomic identity, synonym resolution, cross-refs. CC0.
gbif.org/species/8230673 ↗Record version
Cached and built locally. Source version on this record:
usda-plants-mt-2026-05-26
fetched 2026-05-26T20:46:58Z