Index / Search / Alternanthera philoxeroides
§1 Plant
Alternanthera philoxeroides (Mart.) Griseb.
vernacular alligatorweed — species · Amaranthaceae
§2Habit & range
Habit and range
- Growth habit
- Forb/herb
- Duration
- Perennial
- Group
- Dicot
- Family
- Amaranthaceae Martinov
- Genus
- Alternanthera
§2a
Native status, by region
- L48 Lower 48 States Introduced
- PR Puerto Rico Introduced
§2b
County-level range
· 219 counties across 11 states/territories§3Cultivation specs · USDA
Recorded by the USDA Plant Materials Program.
§3a
Tolerances
- Drought
- Low
- Shade
- Medium
- Moisture use
- High
- Fire
- None
- Salinity
- Low
- Anaerobic
- High
- CaCO₃
- Medium
- Hedging
- None
§3b
Climate & soil
- Cold tolerance
- -3 °F minimum
- Frost-free days
- 200 min.
- Precipitation
- 40–60 in/yr
- pH range
- 4.8–8.8
- Root depth
- 10 in min.
- Fertility need
- Low
- Soil texture
- coarse, medium, fine
§3c
Form & growth
- Growth form
- Stoloniferous
- Growth rate
- Rapid
- Lifespan
- Short
- Mature height
- 0.2 ft
- Foliage texture
- Medium
- Foliage colour
- Green
- Porosity (summer)
- Porous
- Porosity (winter)
- Porous
- Flower colour
- White
- Fire resistant
- Yes
- N fixation
- None
- Toxicity
- None
§3d
Reproduction
- Bloom period
- Early Spring
- Seed begins
- Spring
- Seed ends
- Summer
- Spread rate
- None
- Stratify
- No
- Propagation
- sprigs
§3e
Use & availability
- Commercial availability
- No Known Source
- Nursery stock
- No
- Graze palatability
- High
- Palatable, human
- No
- Lumber
- No
- Christmas tree
- No
§4Counties, by state
Recorded in 219 counties across 11 states/territories.
Alabama view state ↗ 24 I ▾
- Baldwin 01003
- Barbour 01005
- Chambers 01017
- Choctaw 01023
- Clarke 01025
- Dallas 01047
- Greene 01063
- Hale 01065
- Henry 01067
- Jackson 01071
- Lauderdale 01077
- Lee 01081
- Lowndes 01085
- Madison 01089
- Marengo 01091
- Marshall 01095
- Mobile 01097
- Montgomery 01101
- Perry 01105
- Russell 01113
- Shelby 01117
- Tuscaloosa 01125
- Washington 01129
- Wilcox 01131
Arkansas view state ↗ 12 I ▾
Florida view state ↗ 32 I ▾
- Alachua 12001
- Baker 12003
- Bradford 12007
- Brevard 12009
- Broward 12011
- Calhoun 12013
- Charlotte 12015
- Citrus 12017
- Clay 12019
- Duval 12031
- Flagler 12035
- Franklin 12037
- Gilchrist 12041
- Glades 12043
- Gulf 12045
- Jackson 12063
- Lake 12069
- Leon 12073
- Marion 12083
- Miami-Dade 12086
- Okaloosa 12091
- Orange 12095
- Palm Beach 12099
- Pasco 12101
- Pinellas 12103
- Putnam 12107
- Seminole 12117
- St. Johns 12109
- Sumter 12119
- Volusia 12127
- Wakulla 12129
- Walton 12131
Georgia view state ↗ 20 I ▾
Kentucky view state ↗ 7 I ▾
Louisiana view state ↗ 57 I ▾
- Acadia 22001
- Allen 22003
- Ascension 22005
- Assumption 22007
- Avoyelles 22009
- Bienville 22013
- Caddo 22017
- Calcasieu 22019
- Caldwell 22021
- Cameron 22023
- Catahoula 22025
- Concordia 22029
- De Soto 22031
- East Baton Rouge 22033
- East Carroll 22035
- East Feliciana 22037
- Evangeline 22039
- Franklin 22041
- Iberia 22045
- Iberville 22047
- Jefferson 22051
- Jefferson Davis 22053
- Lafayette 22055
- Lafourche 22057
- LaSalle 22059
- Lincoln 22061
- Livingston 22063
- Madison 22065
- Morehouse 22067
- Natchitoches 22069
- Orleans 22071
- Ouachita 22073
- Plaquemines 22075
- Pointe Coupee 22077
- Rapides 22079
- Red River 22081
- Richland 22083
- Sabine 22085
- St. Bernard 22087
- St. Charles 22089
- St. Helena 22091
- St. James 22093
- St. John the Baptist 22095
- St. Landry 22097
- St. Martin 22099
- St. Mary 22101
- St. Tammany 22103
- Tangipahoa 22105
- Tensas 22107
- Terrebonne 22109
- Union 22111
- Vermilion 22113
- Washington 22117
- West Baton Rouge 22121
- West Carroll 22123
- West Feliciana 22125
- Winn 22127
Mississippi view state ↗ 19 I ▾
North Carolina view state ↗ 10 I ▾
South Carolina view state ↗ 15 I ▾
Tennessee view state ↗ 17 I ▾
§5Sources & provenance
USDA PLANTS
Symbol, taxonomy, distribution, cultivation specs, native status. Public domain.
plants.usda.gov/ALPH ↗GBIF Backbone
Canonical taxonomic identity, synonym resolution, cross-refs. CC0.
gbif.org/species/3084923 ↗Record version
Cached and built locally. Source version on this record:
usda-plants-mt-2026-05-26
fetched 2026-05-26T06:33:17Z