Index / Search / Toxicodendron rydbergii
§1 Plant
Toxicodendron rydbergii (Small ex Rydb.) Greene
vernacular western poison ivy — species · Anacardiaceae
§2Habit & range
Habit and range
- Growth habit
- Forb/herb, Shrub, Subshrub, Vine
- Duration
- Perennial
- Group
- Dicot
- Family
- Anacardiaceae R. Br.
- Genus
- Toxicodendron
§2a
Native status, by region
- CAN Canada Native
- L48 Lower 48 States Native
§2b
County-level range
· 315 counties across 24 states/territories§3Cultivation
No cultivation specs.
USDA has not characterised this taxon. Roughly four out of five plants in the database lack the detailed cultivation record present here — typically because they have not been the focus of NRCS Plant Materials work. Range and distribution data are unaffected.
§4Counties, by state
Recorded in 315 counties across 24 states/territories.
Arizona view state ↗ 10 N ▾
Colorado view state ↗ 16 N ▾
Idaho view state ↗ 8 N ▾
Iowa view state ↗ 7 N ▾
Kansas view state ↗ 47 N ▾
- Barber 20007
- Cheyenne 20023
- Clark 20025
- Comanche 20033
- Decatur 20039
- Edwards 20047
- Elk 20049
- Ellis 20051
- Ellsworth 20053
- Finney 20055
- Ford 20057
- Gove 20063
- Graham 20065
- Gray 20069
- Greeley 20071
- Hamilton 20075
- Harper 20077
- Harvey 20079
- Hodgeman 20083
- Kearny 20093
- Lane 20101
- Logan 20109
- Marion 20115
- McPherson 20113
- Meade 20119
- Morton 20129
- Ness 20135
- Norton 20137
- Osborne 20141
- Ottawa 20143
- Pawnee 20145
- Phillips 20147
- Rawlins 20153
- Reno 20155
- Rice 20159
- Rooks 20163
- Rush 20165
- Scott 20171
- Sedgwick 20173
- Sheridan 20179
- Sherman 20181
- Stafford 20185
- Stanton 20187
- Thomas 20193
- Trego 20195
- Wallace 20199
- Wichita 20203
Maine view state ↗ 12 N ▾
Massachusetts view state ↗ 7 N ▾
Minnesota view state ↗ 58 N ▾
- Aitkin 27001
- Anoka 27003
- Beltrami 27007
- Big Stone 27011
- Blue Earth 27013
- Brown 27015
- Carver 27019
- Cass 27021
- Chippewa 27023
- Clay 27027
- Clearwater 27029
- Cook 27031
- Crow Wing 27035
- Dakota 27037
- Dodge 27039
- Douglas 27041
- Faribault 27043
- Fillmore 27045
- Freeborn 27047
- Hennepin 27053
- Houston 27055
- Isanti 27059
- Itasca 27061
- Jackson 27063
- Kittson 27069
- Koochiching 27071
- Lac qui Parle 27073
- Lake 27075
- Lake of the Woods 27077
- Le Sueur 27079
- Lincoln 27081
- Lyon 27083
- Marshall 27089
- Martin 27091
- Meeker 27093
- Mille Lacs 27095
- Morrison 27097
- Norman 27107
- Olmsted 27109
- Pine 27115
- Pipestone 27117
- Polk 27119
- Pope 27121
- Rice 27131
- Scott 27139
- St. Louis 27137
- Stearns 27145
- Steele 27147
- Swift 27151
- Todd 27153
- Traverse 27155
- Wabasha 27157
- Wadena 27159
- Waseca 27161
- Washington 27163
- Winona 27169
- Wright 27171
- Yellow Medicine 27173
Montana view state ↗ 16 N ▾
Nebraska view state ↗ 17 N ▾
Nevada view state ↗ 1 N ▾
New Hampshire view state ↗ 8 N ▾
New Mexico view state ↗ 14 N ▾
New York view state ↗ 2 N ▾
North Dakota view state ↗ 4 N ▾
Ohio view state ↗ 3 N ▾
Oklahoma view state ↗ 1 N ▾
Pennsylvania view state ↗ 3 N ▾
Rhode Island view state ↗ 1 N ▾
South Dakota view state ↗ 14 N ▾
Texas view state ↗ 6 N ▾
Vermont view state ↗ 6 N ▾
West Virginia view state ↗ 8 N ▾
Wisconsin view state ↗ 46 N ▾
- Ashland 55003
- Barron 55005
- Bayfield 55007
- Buffalo 55011
- Burnett 55013
- Clark 55019
- Columbia 55021
- Dane 55025
- Dodge 55027
- Door 55029
- Douglas 55031
- Dunn 55033
- Fond du Lac 55039
- Grant 55043
- Green Lake 55047
- Iowa 55049
- Iron 55051
- Jackson 55053
- Jefferson 55055
- La Crosse 55063
- Lafayette 55065
- Langlade 55067
- Lincoln 55069
- Marathon 55073
- Marinette 55075
- Menominee 55078
- Milwaukee 55079
- Oconto 55083
- Oneida 55085
- Outagamie 55087
- Ozaukee 55089
- Pepin 55091
- Pierce 55093
- Portage 55097
- Richland 55103
- Rock 55105
- Sauk 55111
- Shawano 55115
- Sheboygan 55117
- St. Croix 55109
- Vernon 55123
- Walworth 55127
- Washburn 55129
- Waukesha 55133
- Waushara 55137
- Wood 55141
§5Sources & provenance
USDA PLANTS
Symbol, taxonomy, distribution, cultivation specs, native status. Public domain.
plants.usda.gov/TORY ↗GBIF Backbone
Canonical taxonomic identity, synonym resolution, cross-refs. CC0.
gbif.org/species/3190615 ↗Record version
Cached and built locally. Source version on this record:
usda-plants-mt-2026-05-26
fetched 2026-05-26T12:10:33Z