Index / Search / Juncus validus
§1 Plant
Juncus validus Coville
vernacular roundhead rush — species · Juncaceae
§2Habit & range
Habit and range
- Growth habit
- Graminoid
- Duration
- Perennial
- Group
- Monocot
- Family
- Juncaceae Juss.
- Genus
- Juncus
§2a
Native status, by region
- L48 Lower 48 States Native
§2b
County-level range
· 291 counties across 18 states/territories§3Cultivation specs · USDA
Recorded by the USDA Plant Materials Program.
§3a
Tolerances
- Drought
- Low
- Shade
- Medium
- Moisture use
- High
- Fire
- High
- Salinity
- None
- Anaerobic
- High
- CaCO₃
- Medium
- Hedging
- None
§3b
Climate & soil
- Cold tolerance
- -3 °F minimum
- Frost-free days
- 165 min.
- Precipitation
- 32–55 in/yr
- pH range
- 5–6.8
- Root depth
- 10 in min.
- Fertility need
- Low
- Soil texture
- coarse, medium
§3c
Form & growth
- Growth form
- Bunch
- Growth rate
- Moderate
- Lifespan
- Long
- Mature height
- 3.2 ft
- Foliage texture
- Coarse
- Foliage colour
- Green
- Porosity (summer)
- Dense
- Porosity (winter)
- Porous
- Flower colour
- Green
- Fruit colour
- Brown
- Fire resistant
- No
- N fixation
- None
- Toxicity
- None
§3d
Reproduction
- Bloom period
- Mid Summer
- Seed abundance
- High
- Seed begins
- Summer
- Seed ends
- Fall
- Spread rate
- Moderate
- Stratify
- No
- Propagation
- seed, bare root, sprigs
§3e
Use & availability
- Commercial availability
- No Known Source
- Nursery stock
- No
- Browse palatability
- Low
- Graze palatability
- Low
- Palatable, human
- No
- Protein potential
- Low
- Lumber
- No
- Christmas tree
- No
§4Counties, by state
Recorded in 291 counties across 18 states/territories.
Alabama view state ↗ 22 N ▾
Arkansas view state ↗ 39 N ▾
- Ashley 05003
- Baxter 05005
- Bradley 05011
- Calhoun 05013
- Chicot 05017
- Clark 05019
- Cleburne 05023
- Cleveland 05025
- Columbia 05027
- Conway 05029
- Craighead 05031
- Crawford 05033
- Dallas 05039
- Drew 05043
- Faulkner 05045
- Franklin 05047
- Fulton 05049
- Garland 05051
- Grant 05053
- Hempstead 05057
- Hot Spring 05059
- Independence 05063
- Izard 05065
- Jefferson 05069
- Johnson 05071
- Little River 05081
- Logan 05083
- Miller 05091
- Ouachita 05103
- Polk 05113
- Pope 05115
- Pulaski 05119
- Saline 05125
- Scott 05127
- Sebastian 05131
- Stone 05137
- Union 05139
- Washington 05143
- White 05145
Delaware view state ↗ 1 N ▾
Florida view state ↗ 17 N ▾
Georgia view state ↗ 18 N ▾
Illinois view state ↗ 1 N ▾
Kentucky view state ↗ 2 N ▾
Louisiana view state ↗ 50 N ▾
- Acadia 22001
- Allen 22003
- Avoyelles 22009
- Beauregard 22011
- Bienville 22013
- Bossier 22015
- Caddo 22017
- Calcasieu 22019
- Caldwell 22021
- Cameron 22023
- Catahoula 22025
- Claiborne 22027
- De Soto 22031
- East Baton Rouge 22033
- East Carroll 22035
- East Feliciana 22037
- Evangeline 22039
- Franklin 22041
- Grant 22043
- Iberia 22045
- Iberville 22047
- Jackson 22049
- Jefferson Davis 22053
- LaSalle 22059
- Lincoln 22061
- Livingston 22063
- Madison 22065
- Morehouse 22067
- Natchitoches 22069
- Orleans 22071
- Ouachita 22073
- Rapides 22079
- Red River 22081
- Richland 22083
- Sabine 22085
- St. Bernard 22087
- St. Charles 22089
- St. Helena 22091
- St. John the Baptist 22095
- St. Mary 22101
- St. Tammany 22103
- Tangipahoa 22105
- Union 22111
- Vermilion 22113
- Vernon 22115
- Washington 22117
- Webster 22119
- West Carroll 22123
- West Feliciana 22125
- Winn 22127
Maryland view state ↗ 3 N ▾
Mississippi view state ↗ 23 N ▾
- Attala 28007
- Calhoun 28013
- Carroll 28015
- Choctaw 28019
- DeSoto 28033
- Forrest 28035
- Harrison 28047
- Jackson 28059
- Jones 28067
- Lafayette 28071
- Lee 28081
- Madison 28089
- Marshall 28093
- Montgomery 28097
- Pike 28113
- Pontotoc 28115
- Rankin 28121
- Smith 28129
- Tate 28137
- Tishomingo 28141
- Union 28145
- Washington 28151
- Yalobusha 28161
Missouri view state ↗ 6 N ▾
North Carolina view state ↗ 8 N ▾
Oklahoma view state ↗ 22 N ▾
- Bryan 40013
- Choctaw 40023
- Cleveland 40027
- Creek 40037
- Grady 40051
- Hughes 40063
- Johnston 40069
- Latimer 40077
- Le Flore 40079
- Love 40085
- McCurtain 40089
- McIntosh 40091
- Murray 40099
- Muskogee 40101
- Oklahoma 40109
- Osage 40113
- Pontotoc 40123
- Pottawatomie 40125
- Pushmataha 40127
- Sequoyah 40135
- Wagoner 40145
- Washington 40147
South Carolina view state ↗ 5 N ▾
Tennessee view state ↗ 12 N ▾
Texas view state ↗ 52 N ▾
- Anderson 48001
- Angelina 48005
- Aransas 48007
- Bastrop 48021
- Bowie 48037
- Brazoria 48039
- Brazos 48041
- Burleson 48051
- Caldwell 48055
- Calhoun 48057
- Cameron 48061
- Cass 48067
- Chambers 48071
- Comanche 48093
- Cooke 48097
- Eastland 48133
- Freestone 48161
- Galveston 48167
- Gillespie 48171
- Gonzales 48177
- Gregg 48183
- Guadalupe 48187
- Hardin 48199
- Harris 48201
- Harrison 48203
- Jasper 48241
- Jefferson 48245
- Lamar 48277
- Leon 48289
- Liberty 48291
- Marion 48315
- Montague 48337
- Montgomery 48339
- Morris 48343
- Nacogdoches 48347
- Newton 48351
- Nueces 48355
- Panola 48365
- Polk 48373
- Robertson 48395
- Rusk 48401
- Sabine 48403
- San Patricio 48409
- Travis 48453
- Tyler 48457
- Upshur 48459
- Van Zandt 48467
- Walker 48471
- Waller 48473
- Washington 48477
- Willacy 48489
- Wood 48499
§5Sources & provenance
USDA PLANTS
Symbol, taxonomy, distribution, cultivation specs, native status. Public domain.
plants.usda.gov/JUVA2 ↗GBIF Backbone
Canonical taxonomic identity, synonym resolution, cross-refs. CC0.
gbif.org/species/2701636 ↗Record version
Cached and built locally. Source version on this record:
usda-plants-mt-2026-05-26
fetched 2026-05-26T20:46:58Z