Index / Search / Helianthus angustifolius
§1 Plant
Helianthus angustifolius L.
vernacular swamp sunflower — species · Asteraceae
§2Habit & range
Habit and range
- Growth habit
- Forb/herb
- Duration
- Perennial
- Group
- Dicot
- Family
- Asteraceae Bercht. & J. Presl
- Genus
- Helianthus
§2a
Native status, by region
- L48 Lower 48 States Native
§2b
County-level range
· 458 counties across 23 states/territories§3Cultivation specs · USDA
Recorded by the USDA Plant Materials Program.
§3a
Tolerances
- Drought
- Medium
- Shade
- Medium
- Moisture use
- Medium
- Fire
- Medium
- Salinity
- None
- Anaerobic
- None
- CaCO₃
- Medium
- Hedging
- None
§3b
Climate & soil
- Cold tolerance
- -28 °F minimum
- Frost-free days
- 160 min.
- Precipitation
- 25–65 in/yr
- pH range
- 4–7
- Root depth
- 6 in min.
- Fertility need
- Low
- Soil texture
- coarse, medium
§3c
Form & growth
- Growth form
- Rhizomatous
- Growth rate
- Moderate
- Lifespan
- Moderate
- Mature height
- 5.6 ft
- Foliage texture
- Medium
- Foliage colour
- Dark 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
- Late Summer
- Seed abundance
- Medium
- Seed begins
- Summer
- Seed ends
- Fall
- Spread rate
- Moderate
- Stratify
- No
- Seeds / lb
- 504,000
- Propagation
- seed, sprigs
§3e
Use & availability
- Commercial availability
- Routinely Available
- Nursery stock
- No
- Browse palatability
- High
- Graze palatability
- High
- Palatable, human
- No
- Lumber
- No
- Christmas tree
- No
§4Counties, by state
Recorded in 458 counties across 23 states/territories.
Alabama view state ↗ 9 N ▾
Arkansas view state ↗ 48 N ▾
- Arkansas 05001
- Ashley 05003
- Bradley 05011
- Calhoun 05013
- Chicot 05017
- Clark 05019
- Clay 05021
- Cleburne 05023
- Cleveland 05025
- Columbia 05027
- Conway 05029
- Craighead 05031
- Crawford 05033
- Cross 05037
- Dallas 05039
- Desha 05041
- Drew 05043
- Faulkner 05045
- Franklin 05047
- Garland 05051
- Grant 05053
- Greene 05055
- Hempstead 05057
- Howard 05061
- Independence 05063
- Jefferson 05069
- Lafayette 05073
- Lee 05077
- Lincoln 05079
- Little River 05081
- Logan 05083
- Miller 05091
- Monroe 05095
- Nevada 05099
- Ouachita 05103
- Pike 05109
- Poinsett 05111
- Polk 05113
- Pope 05115
- Prairie 05117
- Pulaski 05119
- Saline 05125
- Sebastian 05131
- Sevier 05133
- St. Francis 05123
- Union 05139
- Van Buren 05141
- White 05145
Delaware view state ↗ 2 N ▾
District of Columbia view state ↗ 1 N ▾
Florida view state ↗ 48 N ▾
- Alachua 12001
- Bay 12005
- Brevard 12009
- Calhoun 12013
- Charlotte 12015
- Citrus 12017
- Clay 12019
- Columbia 12023
- DeSoto 12027
- Duval 12031
- Escambia 12033
- Flagler 12035
- Franklin 12037
- Gadsden 12039
- Glades 12043
- Gulf 12045
- Hardee 12049
- Hernando 12053
- Highlands 12055
- Hillsborough 12057
- Jackson 12063
- Jefferson 12065
- Lafayette 12067
- Lake 12069
- Lee 12071
- Leon 12073
- Levy 12075
- Liberty 12077
- Manatee 12081
- Marion 12083
- Martin 12085
- Nassau 12089
- Okaloosa 12091
- Okeechobee 12093
- Orange 12095
- Osceola 12097
- Pasco 12101
- Pinellas 12103
- Polk 12105
- Putnam 12107
- Santa Rosa 12113
- St. Lucie 12111
- Sumter 12119
- Taylor 12123
- Union 12125
- Volusia 12127
- Wakulla 12129
- Walton 12131
Georgia view state ↗ 46 N ▾
- Barrow 13013
- Bartow 13015
- Ben Hill 13017
- Berrien 13019
- Bibb 13021
- Brooks 13027
- Bulloch 13031
- Catoosa 13047
- Charlton 13049
- Chatham 13051
- Clarke 13059
- Cobb 13067
- Columbia 13073
- Dawson 13085
- Decatur 13087
- DeKalb 13089
- Dooly 13093
- Douglas 13097
- Emanuel 13107
- Evans 13109
- Floyd 13115
- Grady 13131
- Harris 13145
- Irwin 13155
- Jackson 13157
- Jasper 13159
- Jefferson 13163
- Jones 13169
- Lanier 13173
- Laurens 13175
- Lee 13177
- McDuffie 13189
- McIntosh 13191
- Morgan 13211
- Murray 13213
- Oconee 13219
- Putnam 13237
- Rabun 13241
- Spalding 13255
- Taylor 13269
- Terrell 13273
- Tift 13277
- Toombs 13279
- Towns 13281
- Whitfield 13313
- Wilcox 13315
Illinois view state ↗ 4 N ▾
Indiana view state ↗ 2 N ▾
Kentucky view state ↗ 24 N ▾
- Allen 21003
- Ballard 21007
- Barren 21009
- Bath 21011
- Calloway 21035
- Casey 21045
- Christian 21047
- Graves 21083
- Hardin 21093
- Henry 21103
- Jefferson 21111
- Kenton 21117
- Larue 21123
- Lincoln 21137
- Madison 21151
- Marshall 21157
- McCreary 21147
- Metcalfe 21169
- Montgomery 21173
- Pulaski 21199
- Robertson 21201
- Rowan 21205
- Taylor 21217
- Whitley 21235
Louisiana view state ↗ 43 N ▾
- Acadia 22001
- Allen 22003
- Ascension 22005
- 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 Feliciana 22037
- Evangeline 22039
- Franklin 22041
- Grant 22043
- Jackson 22049
- Jefferson Davis 22053
- Lafayette 22055
- LaSalle 22059
- Lincoln 22061
- Livingston 22063
- Morehouse 22067
- Natchitoches 22069
- Orleans 22071
- Ouachita 22073
- Rapides 22079
- Red River 22081
- Richland 22083
- Sabine 22085
- St. Helena 22091
- St. Tammany 22103
- Tangipahoa 22105
- Union 22111
- Vermilion 22113
- Vernon 22115
- Washington 22117
- Webster 22119
- West Carroll 22123
- Winn 22127
Maryland view state ↗ 1 N ▾
Mississippi view state ↗ 14 N ▾
Missouri view state ↗ 5 N ▾
New Jersey view state ↗ 10 N ▾
New York view state ↗ 5 N ▾
North Carolina view state ↗ 53 N ▾
- Beaufort 37013
- Bertie 37015
- Bladen 37017
- Brunswick 37019
- Cabarrus 37025
- Chatham 37037
- Cherokee 37039
- Chowan 37041
- Clay 37043
- Columbus 37047
- Craven 37049
- Cumberland 37051
- Dare 37055
- Duplin 37061
- Durham 37063
- Gates 37073
- Granville 37077
- Halifax 37083
- Harnett 37085
- Henderson 37089
- Hertford 37091
- Hoke 37093
- Hyde 37095
- Iredell 37097
- Johnston 37101
- Jones 37103
- Lee 37105
- Martin 37117
- Montgomery 37123
- Moore 37125
- Nash 37127
- Northampton 37131
- Onslow 37133
- Orange 37135
- Pamlico 37137
- Pasquotank 37139
- Pender 37141
- Person 37145
- Pitt 37147
- Polk 37149
- Randolph 37151
- Richmond 37153
- Robeson 37155
- Sampson 37163
- Scotland 37165
- Stanly 37167
- Swain 37173
- Union 37179
- Wake 37183
- Warren 37185
- Washington 37187
- Wayne 37191
- Wilson 37195
Ohio view state ↗ 1 N ▾
Pennsylvania view state ↗ 1 N ▾
South Carolina view state ↗ 32 N ▾
- Allendale 45005
- Bamberg 45009
- Barnwell 45011
- Beaufort 45013
- Berkeley 45015
- Calhoun 45017
- Charleston 45019
- Chesterfield 45025
- Clarendon 45027
- Colleton 45029
- Darlington 45031
- Dillon 45033
- Dorchester 45035
- Edgefield 45037
- Florence 45041
- Georgetown 45043
- Greenville 45045
- Hampton 45049
- Horry 45051
- Jasper 45053
- Kershaw 45055
- Lancaster 45057
- Lee 45061
- Lexington 45063
- Marion 45067
- Oconee 45073
- Orangeburg 45075
- Pickens 45077
- Richland 45079
- Saluda 45081
- Sumter 45085
- Williamsburg 45089
Tennessee view state ↗ 43 N ▾
- Benton 47005
- Bledsoe 47007
- Blount 47009
- Cannon 47015
- Cheatham 47021
- Chester 47023
- Cocke 47029
- Coffee 47031
- Cumberland 47035
- Decatur 47039
- Dickson 47043
- Fayette 47047
- Fentress 47049
- Franklin 47051
- Grundy 47061
- Hamilton 47065
- Hardeman 47069
- Hardin 47071
- Haywood 47075
- Henderson 47077
- Henry 47079
- Hickman 47081
- Lawrence 47099
- Lewis 47101
- Lincoln 47103
- Macon 47111
- Madison 47113
- McNairy 47109
- Monroe 47123
- Montgomery 47125
- Morgan 47129
- Overton 47133
- Polk 47139
- Putnam 47141
- Roane 47145
- Robertson 47147
- Rutherford 47149
- Shelby 47157
- Stewart 47161
- Sumner 47165
- Warren 47177
- Weakley 47183
- White 47185
Texas view state ↗ 39 N ▾
- Anderson 48001
- Angelina 48005
- Austin 48015
- Bowie 48037
- Brazoria 48039
- Brazos 48041
- Cameron 48061
- Cass 48067
- Chambers 48071
- Galveston 48167
- Gonzales 48177
- Gregg 48183
- Grimes 48185
- Hardin 48199
- Harris 48201
- Harrison 48203
- Henderson 48213
- Houston 48225
- Jasper 48241
- Jefferson 48245
- Lamar 48277
- Leon 48289
- Liberty 48291
- Matagorda 48321
- Milam 48331
- Morris 48343
- Newton 48351
- Panola 48365
- Polk 48373
- Red River 48387
- Robertson 48395
- Sabine 48403
- San Jacinto 48407
- Shelby 48419
- Titus 48449
- Tyler 48457
- Walker 48471
- Wharton 48481
- Wood 48499
Virginia view state ↗ 26 N ▾
- Amelia 51007
- Arlington 51013
- Augusta 51015
- Brunswick 51025
- Chesapeake (city) 51550
- Chesterfield 51041
- Cumberland 51049
- Dinwiddie 51053
- Essex 51057
- Fairfax 51059
- Franklin 51067
- Greensville 51081
- Hampton (city) 51650
- James City 51095
- King William 51101
- Mathews 51115
- Newport News (city) 51700
- Northampton 51131
- Nottoway 51135
- Prince George 51149
- Southampton 51175
- Suffolk (city) 51800
- Surry 51181
- Sussex 51183
- Warren 51187
- York 51199
West Virginia view state ↗ 1 N ▾
§5Sources & provenance
USDA PLANTS
Symbol, taxonomy, distribution, cultivation specs, native status. Public domain.
plants.usda.gov/HEAN2 ↗GBIF Backbone
Canonical taxonomic identity, synonym resolution, cross-refs. CC0.
gbif.org/species/3119144 ↗Record version
Cached and built locally. Source version on this record:
usda-plants-mt-2026-05-26
fetched 2026-05-26T20:46:58Z