Index / Search / Rhododendron canescens
§1 Plant
Rhododendron canescens (Michx.) Sweet
vernacular mountain azalea — species · Ericaceae
§2Habit & range
Habit and range
- Growth habit
- Shrub
- Duration
- Perennial
- Group
- Dicot
- Family
- Ericaceae Juss.
- Genus
- Rhododendron
§2a
Native status, by region
- L48 Lower 48 States Native
§2b
County-level range
· 338 counties across 12 states/territories§3Cultivation specs · USDA
Recorded by the USDA Plant Materials Program.
§3a
Tolerances
- Drought
- Low
- Shade
- Low
- Moisture use
- Medium
- Fire
- Low
- Salinity
- None
- Anaerobic
- Medium
- CaCO₃
- None
- Hedging
- Low
§3b
Climate & soil
- Cold tolerance
- -13 °F minimum
- Frost-free days
- 200 min.
- Precipitation
- 32–50 in/yr
- pH range
- 4.3–5.8
- Root depth
- 14 in min.
- Fertility need
- Low
- Soil texture
- medium, fine
§3c
Form & growth
- Growth form
- Multiple Stem
- Growth rate
- Slow
- Lifespan
- Long
- Mature height
- 14 ft
- Height @ 20 y
- 13 ft
- Foliage texture
- Coarse
- Foliage colour
- Green
- Porosity (summer)
- Dense
- Porosity (winter)
- Moderate
- Flower colour
- Purple
- Fruit colour
- Brown
- Fire resistant
- No
- N fixation
- None
- Toxicity
- Slight
§3d
Reproduction
- Bloom period
- Spring
- Seed abundance
- Medium
- Seed begins
- Summer
- Seed ends
- Summer
- Spread rate
- Slow
- Stratify
- Yes
- Seeds / lb
- 5,000,000
- Propagation
- seed, cuttings, bare root, container
§3e
Use & availability
- Commercial availability
- Routinely Available
- Nursery stock
- Yes
- Browse palatability
- Low
- Graze palatability
- Low
- Palatable, human
- No
- Protein potential
- Low
- Lumber
- No
- Christmas tree
- No
§4Counties, by state
Recorded in 338 counties across 12 states/territories.
Alabama view state ↗ 54 N ▾
- Autauga 01001
- Baldwin 01003
- Barbour 01005
- Bibb 01007
- Bullock 01011
- Butler 01013
- Calhoun 01015
- Chambers 01017
- Cherokee 01019
- Chilton 01021
- Choctaw 01023
- Clarke 01025
- Clay 01027
- Cleburne 01029
- Conecuh 01035
- Coosa 01037
- Covington 01039
- Crenshaw 01041
- Cullman 01043
- Dale 01045
- Dallas 01047
- DeKalb 01049
- Elmore 01051
- Escambia 01053
- Etowah 01055
- Fayette 01057
- Greene 01063
- Hale 01065
- Houston 01069
- Jackson 01071
- Jefferson 01073
- Lauderdale 01077
- Lawrence 01079
- Lee 01081
- Macon 01087
- Marengo 01091
- Mobile 01097
- Monroe 01099
- Morgan 01103
- Perry 01105
- Pickens 01107
- Pike 01109
- Randolph 01111
- Russell 01113
- Shelby 01117
- St. Clair 01115
- Sumter 01119
- Talladega 01121
- Tallapoosa 01123
- Tuscaloosa 01125
- Walker 01127
- Washington 01129
- Wilcox 01131
- Winston 01133
Arkansas view state ↗ 12 N ▾
Delaware view state ↗ 1 N ▾
Florida view state ↗ 23 N ▾
- Alachua 12001
- Baker 12003
- Bay 12005
- Bradford 12007
- Calhoun 12013
- Clay 12019
- Columbia 12023
- Duval 12031
- Escambia 12033
- Franklin 12037
- Gadsden 12039
- Hamilton 12047
- Jackson 12063
- Jefferson 12065
- Leon 12073
- Liberty 12077
- Marion 12083
- Nassau 12089
- Okaloosa 12091
- Santa Rosa 12113
- Wakulla 12129
- Walton 12131
- Washington 12133
Georgia view state ↗ 81 N ▾
- Baker 13007
- Baldwin 13009
- Bartow 13015
- Ben Hill 13017
- Berrien 13019
- Bibb 13021
- Brooks 13027
- Bryan 13029
- Bulloch 13031
- Burke 13033
- Calhoun 13037
- Camden 13039
- Candler 13043
- Carroll 13045
- Catoosa 13047
- Charlton 13049
- Chatham 13051
- Chattooga 13055
- Cherokee 13057
- Clarke 13059
- Cobb 13067
- Columbia 13073
- Dade 13083
- Dawson 13085
- Decatur 13087
- DeKalb 13089
- Dougherty 13095
- Douglas 13097
- Echols 13101
- Effingham 13103
- Elbert 13105
- Floyd 13115
- Forsyth 13117
- Fulton 13121
- Gilmer 13123
- Grady 13131
- Greene 13133
- Gwinnett 13135
- Habersham 13137
- Hall 13139
- Hancock 13141
- Haralson 13143
- Harris 13145
- Hart 13147
- Houston 13153
- Irwin 13155
- Jackson 13157
- Jasper 13159
- Jeff Davis 13161
- Jefferson 13163
- Jones 13169
- Lanier 13173
- Lee 13177
- Lincoln 13181
- Long 13183
- Lowndes 13185
- Macon 13193
- Madison 13195
- Marion 13197
- McDuffie 13189
- Morgan 13211
- Murray 13213
- Oglethorpe 13221
- Pike 13231
- Putnam 13237
- Quitman 13239
- Randolph 13243
- Richmond 13245
- Talbot 13263
- Tattnall 13267
- Telfair 13271
- Thomas 13275
- Tift 13277
- Toombs 13279
- Upson 13293
- Walker 13295
- Walton 13297
- Washington 13303
- Wayne 13305
- Wilkes 13317
- Worth 13321
Kentucky view state ↗ 1 N ▾
Louisiana view state ↗ 35 N ▾
- Allen 22003
- Avoyelles 22009
- Beauregard 22011
- Bienville 22013
- Bossier 22015
- Caddo 22017
- Calcasieu 22019
- Caldwell 22021
- Catahoula 22025
- Claiborne 22027
- De Soto 22031
- East Baton Rouge 22033
- East Feliciana 22037
- Evangeline 22039
- Grant 22043
- Jackson 22049
- Lafayette 22055
- LaSalle 22059
- Lincoln 22061
- Livingston 22063
- Morehouse 22067
- Natchitoches 22069
- Ouachita 22073
- Rapides 22079
- Red River 22081
- Sabine 22085
- St. Helena 22091
- St. Tammany 22103
- Tangipahoa 22105
- Union 22111
- Vernon 22115
- Washington 22117
- Webster 22119
- West Feliciana 22125
- Winn 22127
Mississippi view state ↗ 46 N ▾
- Alcorn 28003
- Amite 28005
- Choctaw 28019
- Clarke 28023
- Copiah 28029
- Covington 28031
- DeSoto 28033
- Forrest 28035
- Franklin 28037
- George 28039
- Greene 28041
- Grenada 28043
- Hancock 28045
- Harrison 28047
- Hinds 28049
- Itawamba 28057
- Jackson 28059
- Jasper 28061
- Jones 28067
- Kemper 28069
- Lamar 28073
- Lauderdale 28075
- Lawrence 28077
- Leake 28079
- Lee 28081
- Lincoln 28085
- Lowndes 28087
- Marion 28091
- Monroe 28095
- Newton 28101
- Noxubee 28103
- Oktibbeha 28105
- Pearl River 28109
- Perry 28111
- Pike 28113
- Rankin 28121
- Scott 28123
- Simpson 28127
- Smith 28129
- Stone 28131
- Tishomingo 28141
- Walthall 28147
- Washington 28151
- Webster 28155
- Wilkinson 28157
- Winston 28159
North Carolina view state ↗ 4 N ▾
Pennsylvania view state ↗ 11 N ▾
South Carolina view state ↗ 25 N ▾
- Abbeville 45001
- Aiken 45003
- Allendale 45005
- Bamberg 45009
- Barnwell 45011
- Beaufort 45013
- Berkeley 45015
- Calhoun 45017
- Charleston 45019
- Clarendon 45027
- Colleton 45029
- Dorchester 45035
- Edgefield 45037
- Florence 45041
- Georgetown 45043
- Hampton 45049
- Horry 45051
- Jasper 45053
- Marion 45067
- McCormick 45065
- Newberry 45071
- Orangeburg 45075
- Saluda 45081
- Sumter 45085
- Williamsburg 45089
Tennessee view state ↗ 45 N ▾
- Anderson 47001
- Benton 47005
- Bledsoe 47007
- Blount 47009
- Cannon 47015
- Carroll 47017
- Cheatham 47021
- Chester 47023
- Coffee 47031
- Cumberland 47035
- Davidson 47037
- DeKalb 47041
- Franklin 47051
- Grainger 47057
- Grundy 47061
- Hamilton 47065
- Hardeman 47069
- Hardin 47071
- Henderson 47077
- Hickman 47081
- Jackson 47087
- Knox 47093
- Lauderdale 47097
- Lawrence 47099
- Lewis 47101
- Lincoln 47103
- Loudon 47105
- Madison 47113
- Marion 47115
- Maury 47119
- McMinn 47107
- McNairy 47109
- Meigs 47121
- Moore 47127
- Overton 47133
- Perry 47135
- Pickett 47137
- Rhea 47143
- Sequatchie 47153
- Sumner 47165
- Union 47173
- Van Buren 47175
- Warren 47177
- White 47185
- Williamson 47187
§5Sources & provenance
USDA PLANTS
Symbol, taxonomy, distribution, cultivation specs, native status. Public domain.
plants.usda.gov/RHCA7 ↗GBIF Backbone
Canonical taxonomic identity, synonym resolution, cross-refs. CC0.
gbif.org/species/7657461 ↗Record version
Cached and built locally. Source version on this record:
usda-plants-mt-2026-05-26
fetched 2026-05-26T07:25:30Z