Index / Search / Astragalus agrestis
§1 Plant
Astragalus agrestis Douglas ex G. Don
vernacular purple 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
· 268 counties across 16 states/territories§3Cultivation specs · USDA
Recorded by the USDA Plant Materials Program.
§3a
Tolerances
- Drought
- Low
- Shade
- High
- Moisture use
- Low
- Fire
- High
- Salinity
- None
- Anaerobic
- Medium
- CaCO₃
- Low
- Hedging
- None
§3b
Climate & soil
- Cold tolerance
- -33 °F minimum
- Frost-free days
- 175 min.
- Precipitation
- 8–40 in/yr
- pH range
- 6.3–7.7
- Root depth
- 10 in min.
- Fertility need
- Medium
- Soil texture
- medium
§3c
Form & growth
- Growth form
- Rhizomatous
- Growth rate
- Moderate
- Lifespan
- Short
- Mature height
- 1 ft
- Foliage texture
- Fine
- Foliage colour
- Green
- Porosity (summer)
- Porous
- Porosity (winter)
- Porous
- Flower colour
- Purple
- Fruit colour
- Brown
- Fire resistant
- No
- N fixation
- Medium
- Toxicity
- Slight
§3d
Reproduction
- Bloom period
- Summer
- Seed abundance
- Low
- Seed begins
- Summer
- Seed ends
- Fall
- Spread rate
- Slow
- Stratify
- No
- Seeds / lb
- 120,000
- Propagation
- seed
§3e
Use & availability
- Commercial availability
- No Known Source
- Nursery stock
- No
- Browse palatability
- Medium
- Graze palatability
- Medium
- Palatable, human
- No
- Protein potential
- High
- Lumber
- No
- Christmas tree
- No
§4Counties, by state
Recorded in 268 counties across 16 states/territories.
California view state ↗ 3 N ▾
Colorado view state ↗ 23 N ▾
- Alamosa 08003
- Archuleta 08007
- Boulder 08013
- Conejos 08021
- Costilla 08023
- Custer 08027
- Douglas 08035
- El Paso 08041
- Garfield 08045
- Grand 08049
- Gunnison 08051
- Huerfano 08055
- Jefferson 08059
- Larimer 08069
- Mineral 08079
- Moffat 08081
- Park 08093
- Rio Grande 08105
- Saguache 08109
- San Juan 08111
- San Miguel 08113
- Teller 08119
- Weld 08123
Idaho view state ↗ 18 N ▾
Illinois view state ↗ 1 N ▾
Iowa view state ↗ 3 N ▾
Minnesota view state ↗ 52 N ▾
- Anoka 27003
- Becker 27005
- Benton 27009
- Big Stone 27011
- Blue Earth 27013
- Carver 27019
- Cass 27021
- Chippewa 27023
- Chisago 27025
- Clay 27027
- Cottonwood 27033
- Douglas 27041
- Faribault 27043
- Fillmore 27045
- Freeborn 27047
- Grant 27051
- Hennepin 27053
- Houston 27055
- Hubbard 27057
- Jackson 27063
- Kandiyohi 27067
- Kittson 27069
- Lac qui Parle 27073
- Lake of the Woods 27077
- Le Sueur 27079
- Lincoln 27081
- Lyon 27083
- Mahnomen 27087
- Marshall 27089
- Martin 27091
- Meeker 27093
- Mower 27099
- Murray 27101
- Nobles 27105
- Norman 27107
- Otter Tail 27111
- Pennington 27113
- Pipestone 27117
- Polk 27119
- Pope 27121
- Redwood 27127
- Renville 27129
- Rock 27133
- Roseau 27135
- Stearns 27145
- Stevens 27149
- Swift 27151
- Traverse 27155
- Watonwan 27165
- Wilkin 27167
- Wright 27171
- Yellow Medicine 27173
Montana view state ↗ 39 N ▾
- Big Horn 30003
- Carbon 30009
- Carter 30011
- Cascade 30013
- Custer 30017
- Daniels 30019
- Dawson 30021
- Fallon 30025
- Fergus 30027
- Flathead 30029
- Gallatin 30031
- Garfield 30033
- Glacier 30035
- Golden Valley 30037
- Jefferson 30043
- Lake 30047
- Lewis and Clark 30049
- Liberty 30051
- Madison 30057
- McCone 30055
- Missoula 30063
- Musselshell 30065
- Park 30067
- Petroleum 30069
- Phillips 30071
- Powder River 30075
- Powell 30077
- Richland 30083
- Rosebud 30087
- Sheridan 30091
- Silver Bow 30093
- Stillwater 30095
- Sweet Grass 30097
- Teton 30099
- Treasure 30103
- Valley 30105
- Wheatland 30107
- Wibaux 30109
- Yellowstone 30111
Nebraska view state ↗ 4 N ▾
Nevada view state ↗ 6 N ▾
New Mexico view state ↗ 7 N ▾
North Dakota view state ↗ 40 N ▾
- Adams 38001
- Barnes 38003
- Benson 38005
- Billings 38007
- Bottineau 38009
- Bowman 38011
- Burke 38013
- Cass 38017
- Cavalier 38019
- Dickey 38021
- Divide 38023
- Dunn 38025
- Eddy 38027
- Emmons 38029
- Golden Valley 38033
- Grand Forks 38035
- Griggs 38039
- Kidder 38043
- LaMoure 38045
- Logan 38047
- McHenry 38049
- McKenzie 38053
- McLean 38055
- Mercer 38057
- Mountrail 38061
- Oliver 38065
- Pembina 38067
- Ransom 38073
- Richland 38077
- Rolette 38079
- Sargent 38081
- Sheridan 38083
- Slope 38087
- Stark 38089
- Steele 38091
- Stutsman 38093
- Traill 38097
- Ward 38101
- Wells 38103
- Williams 38105
Oregon view state ↗ 8 N ▾
South Dakota view state ↗ 16 N ▾
Utah view state ↗ 21 N ▾
Washington view state ↗ 9 N ▾
§5Sources & provenance
USDA PLANTS
Symbol, taxonomy, distribution, cultivation specs, native status. Public domain.
plants.usda.gov/ASAG2 ↗GBIF Backbone
Canonical taxonomic identity, synonym resolution, cross-refs. CC0.
gbif.org/species/5342849 ↗Record version
Cached and built locally. Source version on this record:
usda-plants-mt-2026-05-26
fetched 2026-05-26T20:46:58Z