Index / Search / Pascopyrum smithii
§1 Plant
Pascopyrum smithii (Rydb.) Á. Löve
vernacular western wheatgrass — species · Poaceae
§2Habit & range
Habit and range
- Growth habit
- Graminoid
- Duration
- Perennial
- Group
- Monocot
- Family
- Poaceae Barnhart
- Genus
- Pascopyrum
§2a
Native status, by region
- AK Alaska Introduced
- CAN Canada Native
- L48 Lower 48 States Native
§2b
County-level range
· 520 counties across 22 states/territories§3Cultivation specs · USDA
Recorded by the USDA Plant Materials Program.
§3a
Tolerances
- Drought
- High
- Shade
- High
- Moisture use
- Medium
- Fire
- High
- Salinity
- High
- Anaerobic
- Medium
- CaCO₃
- High
- Hedging
- None
§3b
Climate & soil
- Cold tolerance
- -43 °F minimum
- Frost-free days
- 90 min.
- Precipitation
- 8–36 in/yr
- pH range
- 4.5–9
- Root depth
- 20 in min.
- Fertility need
- Medium
- Soil texture
- medium, fine
§3c
Form & growth
- Growth form
- Rhizomatous
- Growth rate
- Rapid
- Lifespan
- Long
- Mature height
- 2 ft
- Foliage texture
- Medium
- Foliage colour
- Gray-Green
- Porosity (summer)
- Moderate
- Porosity (winter)
- Porous
- Flower colour
- Yellow
- Fruit colour
- Brown
- Fire resistant
- No
- N fixation
- None
- Toxicity
- None
§3d
Reproduction
- Bloom period
- Mid Summer
- Seed abundance
- Low
- Seed begins
- Summer
- Seed ends
- Fall
- Spread rate
- Slow
- Stratify
- No
- Seeds / lb
- 113,840
- Propagation
- seed
§3e
Use & availability
- Commercial availability
- Routinely Available
- Nursery stock
- No
- Browse palatability
- Medium
- Graze palatability
- Medium
- Palatable, human
- No
- Protein potential
- Medium
- Lumber
- No
- Christmas tree
- No
§4Counties, by state
Recorded in 520 counties across 22 states/territories.
Arizona view state ↗ 7 N ▾
Arkansas view state ↗ 3 N ▾
Georgia view state ↗ 1 N ▾
Illinois view state ↗ 43 N ▾
- Adams 17001
- Boone 17007
- Carroll 17015
- Cass 17017
- Champaign 17019
- Coles 17029
- Cook 17031
- Crawford 17033
- DeKalb 17037
- Douglas 17041
- DuPage 17043
- Edgar 17045
- Fulton 17057
- Greene 17061
- Grundy 17063
- Hancock 17067
- Henry 17073
- Jackson 17077
- Jo Daviess 17085
- Kane 17089
- Kankakee 17091
- Kendall 17093
- Lake 17097
- Macon 17115
- Madison 17119
- McDonough 17109
- McHenry 17111
- Menard 17129
- Morgan 17137
- Peoria 17143
- Pike 17149
- Putnam 17155
- Sangamon 17167
- Schuyler 17169
- Shelby 17173
- St. Clair 17163
- Stark 17175
- Stephenson 17177
- Tazewell 17179
- Vermilion 17183
- Will 17197
- Winnebago 17201
- Woodford 17203
Indiana view state ↗ 26 N ▾
- Boone 18011
- Clinton 18023
- Crawford 18025
- Fulton 18049
- Gibson 18051
- Grant 18053
- Hamilton 18057
- Henry 18065
- Howard 18067
- Jackson 18071
- Johnson 18081
- Lake 18089
- LaPorte 18091
- Lawrence 18093
- Marion 18097
- Miami 18103
- Morgan 18109
- Shelby 18145
- Starke 18149
- Steuben 18151
- Tippecanoe 18157
- Tipton 18159
- Wabash 18169
- Wayne 18177
- Wells 18179
- White 18181
Iowa view state ↗ 40 N ▾
- Adair 19001
- Boone 19015
- Buena Vista 19021
- Calhoun 19025
- Carroll 19027
- Cass 19029
- Cerro Gordo 19033
- Cherokee 19035
- Clarke 19039
- Clay 19041
- Clayton 19043
- Crawford 19047
- Decatur 19053
- Dickinson 19059
- Emmet 19063
- Fremont 19071
- Greene 19073
- Hancock 19081
- Harrison 19085
- Humboldt 19091
- Ida 19093
- Iowa 19095
- Jackson 19097
- Kossuth 19109
- Lucas 19117
- Lyon 19119
- Marion 19125
- Monona 19133
- O'Brien 19141
- Osceola 19143
- Page 19145
- Palo Alto 19147
- Polk 19153
- Pottawattamie 19155
- Sac 19161
- Sioux 19167
- Union 19175
- Warren 19181
- Webster 19187
- Woodbury 19193
Kansas view state ↗ 96 N ▾
- Anderson 20003
- Barber 20007
- Barton 20009
- Bourbon 20011
- Brown 20013
- Butler 20015
- Chase 20017
- Cherokee 20021
- Cheyenne 20023
- Clark 20025
- Clay 20027
- Cloud 20029
- Coffey 20031
- Comanche 20033
- Cowley 20035
- Crawford 20037
- Decatur 20039
- Dickinson 20041
- Doniphan 20043
- Douglas 20045
- Edwards 20047
- Elk 20049
- Ellis 20051
- Ellsworth 20053
- Finney 20055
- Ford 20057
- Geary 20061
- Gove 20063
- Graham 20065
- Grant 20067
- Gray 20069
- Greeley 20071
- Greenwood 20073
- Hamilton 20075
- Harper 20077
- Harvey 20079
- Haskell 20081
- Hodgeman 20083
- Jackson 20085
- Jefferson 20087
- Jewell 20089
- Kearny 20093
- Kingman 20095
- Kiowa 20097
- Labette 20099
- Lane 20101
- Lincoln 20105
- Logan 20109
- Lyon 20111
- Marion 20115
- Marshall 20117
- McPherson 20113
- Meade 20119
- Mitchell 20123
- Montgomery 20125
- Morris 20127
- Morton 20129
- Nemaha 20131
- Neosho 20133
- Ness 20135
- Norton 20137
- Osage 20139
- Osborne 20141
- Ottawa 20143
- Pawnee 20145
- Phillips 20147
- Pottawatomie 20149
- Pratt 20151
- Rawlins 20153
- Reno 20155
- Republic 20157
- Rice 20159
- Riley 20161
- Rooks 20163
- Rush 20165
- Russell 20167
- Saline 20169
- Scott 20171
- Sedgwick 20173
- Seward 20175
- Shawnee 20177
- Sheridan 20179
- Sherman 20181
- Smith 20183
- Stafford 20185
- Stanton 20187
- Stevens 20189
- Sumner 20191
- Thomas 20193
- Trego 20195
- Wabaunsee 20197
- Wallace 20199
- Washington 20201
- Wichita 20203
- Woodson 20207
- Wyandotte 20209
Kentucky view state ↗ 4 N ▾
Massachusetts view state ↗ 1 N ▾
Michigan view state ↗ 13 N ▾
Minnesota view state ↗ 31 N ▾
- Anoka 27003
- Benton 27009
- Blue Earth 27013
- Cass 27021
- Chippewa 27023
- Clay 27027
- Clearwater 27029
- Crow Wing 27035
- Dakota 27037
- Douglas 27041
- Freeborn 27047
- Goodhue 27049
- Hennepin 27053
- Jackson 27063
- Kandiyohi 27067
- Kittson 27069
- Lincoln 27081
- Mille Lacs 27095
- Nicollet 27103
- Pennington 27113
- Pipestone 27117
- Polk 27119
- Pope 27121
- Redwood 27127
- Rice 27131
- Roseau 27135
- Scott 27139
- Traverse 27155
- Wabasha 27157
- Wilkin 27167
- Winona 27169
Missouri view state ↗ 27 N ▾
- Adair 29001
- Andrew 29003
- Boone 29019
- Buchanan 29021
- Cass 29037
- Chariton 29041
- Clark 29045
- Grundy 29079
- Holt 29087
- Howard 29089
- Howell 29091
- Jackson 29095
- Jasper 29097
- Johnson 29101
- Lafayette 29107
- Lewis 29111
- Linn 29115
- Madison 29123
- Marion 29127
- Pike 29163
- Platte 29165
- Putnam 29171
- Shelby 29205
- St. Charles 29183
- St. Clair 29185
- St. Louis 29189
- Worth 29227
Montana view state ↗ 18 N ▾
Nebraska view state ↗ 57 N ▾
- Adams 31001
- Antelope 31003
- Arthur 31005
- Banner 31007
- Box Butte 31013
- Boyd 31015
- Brown 31017
- Buffalo 31019
- Butler 31023
- Cass 31025
- Cedar 31027
- Chase 31029
- Cherry 31031
- Cheyenne 31033
- Clay 31035
- Colfax 31037
- Cuming 31039
- Custer 31041
- Dawes 31045
- Dixon 31051
- Dodge 31053
- Douglas 31055
- Dundy 31057
- Franklin 31061
- Frontier 31063
- Garden 31069
- Grant 31075
- Hall 31079
- Harlan 31083
- Hitchcock 31087
- Holt 31089
- Kearney 31099
- Keya Paha 31103
- Kimball 31105
- Knox 31107
- Lancaster 31109
- Logan 31113
- Morrill 31123
- Nemaha 31127
- Nuckolls 31129
- Otoe 31131
- Perkins 31135
- Phelps 31137
- Platte 31141
- Red Willow 31145
- Richardson 31147
- Rock 31149
- Sarpy 31153
- Scotts Bluff 31157
- Seward 31159
- Sheridan 31161
- Sherman 31163
- Sioux 31165
- Thomas 31171
- Valley 31175
- Washington 31177
- Webster 31181
New Hampshire view state ↗ 1 N ▾
New Mexico view state ↗ 25 N ▾
- Bernalillo 35001
- Catron 35003
- Chaves 35005
- Cibola 35006
- Colfax 35007
- Dona Ana 35013
- Eddy 35015
- Grant 35017
- Guadalupe 35019
- Harding 35021
- Lincoln 35027
- McKinley 35031
- Mora 35033
- Otero 35035
- Rio Arriba 35039
- San Juan 35045
- San Miguel 35047
- Sandoval 35043
- Santa Fe 35049
- Sierra 35051
- Socorro 35053
- Taos 35055
- Torrance 35057
- Union 35059
- Valencia 35061
New York view state ↗ 2 N ▾
North Dakota view state ↗ 43 N ▾
- Barnes 38003
- Benson 38005
- Billings 38007
- Bottineau 38009
- Bowman 38011
- Burleigh 38015
- Cass 38017
- Cavalier 38019
- Dickey 38021
- Divide 38023
- Dunn 38025
- Emmons 38029
- Golden Valley 38033
- Grand Forks 38035
- Grant 38037
- Griggs 38039
- Hettinger 38041
- Kidder 38043
- Logan 38047
- McHenry 38049
- McIntosh 38051
- McKenzie 38053
- McLean 38055
- Mercer 38057
- Morton 38059
- Mountrail 38061
- Nelson 38063
- Oliver 38065
- Pembina 38067
- Pierce 38069
- Ramsey 38071
- Ransom 38073
- Richland 38077
- Sargent 38081
- Sheridan 38083
- Sioux 38085
- Slope 38087
- Stark 38089
- Steele 38091
- Stutsman 38093
- Ward 38101
- Wells 38103
- Williams 38105
Ohio view state ↗ 1 N ▾
Oklahoma view state ↗ 22 N ▾
- Alfalfa 40003
- Beaver 40007
- Cimarron 40025
- Cleveland 40027
- Comanche 40031
- Custer 40039
- Grady 40051
- Grant 40053
- Greer 40055
- Harper 40059
- Kingfisher 40073
- Logan 40083
- Major 40093
- Noble 40103
- Payne 40119
- Pontotoc 40123
- Roger Mills 40129
- Texas 40139
- Tillman 40141
- Washington 40147
- Woods 40151
- Woodward 40153
South Dakota view state ↗ 25 N ▾
- Beadle 46005
- Brookings 46011
- Butte 46019
- Clay 46027
- Codington 46029
- Day 46037
- Fall River 46047
- Gregory 46053
- Haakon 46055
- Harding 46063
- Hutchinson 46067
- Jackson 46071
- Lawrence 46081
- Lincoln 46083
- Lyman 46085
- Marshall 46091
- McPherson 46089
- Meade 46093
- Mellette 46095
- Minnehaha 46099
- Pennington 46103
- Perkins 46105
- Spink 46115
- Stanley 46117
- Yankton 46135
Wisconsin view state ↗ 34 N ▾
- Ashland 55003
- Barron 55005
- Bayfield 55007
- Brown 55009
- Buffalo 55011
- Calumet 55015
- Clark 55019
- Columbia 55021
- Dane 55025
- Douglas 55031
- Eau Claire 55035
- Fond du Lac 55039
- Grant 55043
- Green 55045
- Iowa 55049
- Jackson 55053
- Jefferson 55055
- Manitowoc 55071
- Marinette 55075
- Marquette 55077
- Menominee 55078
- Milwaukee 55079
- Monroe 55081
- Outagamie 55087
- Portage 55097
- Racine 55101
- Rock 55105
- Rusk 55107
- Vernon 55123
- Walworth 55127
- Washburn 55129
- Washington 55131
- Waukesha 55133
- Winnebago 55139
§5Sources & provenance
USDA PLANTS
Symbol, taxonomy, distribution, cultivation specs, native status. Public domain.
plants.usda.gov/PASM ↗GBIF Backbone
Canonical taxonomic identity, synonym resolution, cross-refs. CC0.
gbif.org/species/5290148 ↗Record version
Cached and built locally. Source version on this record:
usda-plants-mt-2026-05-26
fetched 2026-05-26T09:28:40Z