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Saltmarsh Water-hemp

Amaranthus cannabinus

Found in salt, brackish, and freshwater tidal marshes, especially along the banks of tidal guts. FloraQuest, phone app (app page) What its natural habitat tells you

69
Strong

Native to Florida. How scores work Is it native here?

Profile 94%

Height
Up to about 10 feet
Light
Partial shade, Full sun
Soil moisture
Wet to standing water
Will it fit your yard?

At a glance

Life cycle
Perennial
Bloom
July to December

Not yet recorded · Spread · Leaves

Recorded in 8 Florida counties.

Natural habitats

Places it grows wild. Not a planting requirement. Each habitat page lists the plants and wildlife also found there.

Freshwater tidal marshes

Marshes along tidal rivers where the water is fresh but rises and falls with the tide.

All habitats

Ecological relationships

Who uses this plant?

What these records mean

45CaterpillarsGenus host records with ranges including FL

Genus host records with ranges including FL · Amaranthus

  • Achyra rantalisGarden Webworm Moth
  • Agrotis ipsilonIpsilon Dart, Black Cutworm, Greasy Cutworm
  • Amyna strictaEight-Spot Moth
  • Anavitrinella pampinariaCommon Gray, Cranberry Spanworm
  • Argyrotaenia ivanaIvana Leafroller Moth
  • Dicymolomia julianalisJulia's Dicymolomia
  • Disclisioprocta stellataSomber Carpet, Bougainvillea Looper
  • Epiblema otiosanaBidens Borer Moth
  • Estigmene acreaSalt Marsh Moth, Acrea Moth
  • Feltia repletaReplete Dart
Show all 45
  • Feltia subterraneaSubterranean Dart, Granulate Cutworm
  • Gesta martialisMottled Duskywing
  • Hahncappsia mancalisCommon Hahncappsia
  • Helicoverpa zeaCorn Earworm Moth
  • Herpetogramma bipunctalisSouthern Beet Webworm, Two-Spotted Herpetogramma
  • Hyles lineataWhite-Lined Sphinx
  • Hymenia perspectalisSpotted Beet Webworm
  • Melanochroia chephiseWhite-Tipped Black Moth, Snowbush Spanworm
  • Mocis latipesSmall Mocis, Striped Grass Looper
  • Mythimna unipunctaArmyworm Moth, White Speck
  • Neogalea suniaLantana Stick Caterpillar, Catabena Moth
  • Pholisora catullusCommon Sootywing
  • Platynota flavedanaBlack-Shaded Platynota
  • Platynota rostranaOmnivorous Platynota
  • Platynota stultanaOmnivorous Leafroller
  • Psara obscuralisObscure Psara Moth
  • Rhectocraspeda periusalisEggplant Webworm
  • Scythris trivinctellaBanded Scythris
  • Sparganothis sulfureanaSparganothis Fruitworm Moth, Sulfur Leafroller, False Yellow-Head
  • Spilosoma virginicaVirginian Tiger Moth, Yellow Woolybear Moth, Yellow Bear
  • Spodoptera albulaWhite-Spotted Armyworm, Gray-Streaked Armyworm
  • Spodoptera androgeaAndrogea Armyworm
  • Spodoptera dolichosSweetpotato Armyworm, Dolichos Armyworm, Large Cotton Armyworm
  • Spodoptera eridaniaSouthern Armyworm Moth
  • Spodoptera frugiperdaFall Armyworm Moth
  • Spodoptera ornithogalliYellow-Striped Armyworm Moth, Cotton Cutworm
  • Spoladea recurvalisHawaiian Beet Webworm
  • Staphylus hayhurstiiHayhurst's Scallopwing, Scalloped Sooty Wing, Scalloped Sootywing
  • Udea rubigalisCelery Leaftier
  • Virbia aurantiacaOrange Virbia, Orange Holomelina
  • Helvibotys helvialis
  • Megalorhipida leucodactylus
  • Omiodes simialis
  • Paralobesia sambuci
  • Paralobesia vernoniana
Shropshire & Tallamy 2025, Lepidoptera of North America north of Mexico, ZooKeys 1261 (ODbL)
4BeesSoutheastern regional records

Southeastern regional records · Amaranthus

Individual names are not available yet.

Noori, Seltmann & Orr 2026, A curated and integrated dataset for exploring global bee-plant interactions (GloBI), Zenodo, CC BY 4.0
0Specialist beesPollen specialists
39BirdsRecorded genus food-resource interactions; not a state feeding claim

Recorded genus food-resource interactions; not a state feeding claim · Amaranthus

  • Acanthis flammeaCommon Redpoll
  • Agelaius phoeniceusRed-winged Blackbird
  • Agelaius tricolorTricolored Blackbird
  • Alectoris chukarChukar
  • Anthus rubescensAmerican Pipit
  • Calcarius lapponicusLapland Longspur
  • Calcarius ornatusChestnut-collared Longspur
  • Callipepla californicaCalifornia Quail
  • Columba liviaRock Pigeon
  • Columbina passerinaCommon Ground Dove
Show all 39
  • Euphagus cyanocephalusBrewer's Blackbird
  • Haemorhous mexicanusHouse Finch
  • Ixoreus naeviusVaried Thrush
  • Junco hyemalisDark-eyed Junco
  • Meleagris gallopavoWild Turkey
  • Melospiza melodiaSong Sparrow
  • Melozone crissalisCalifornia Towhee
  • Molothrus aterBrown-headed Cowbird
  • Oreortyx pictusMountain Quail
  • Perdix perdixGray Partridge
  • Pheucticus melanocephalusBlack-headed Grosbeak
  • Pinicola enucleatorPine Grosbeak
  • Pipilo maculatusSpotted Towhee
  • Plectrophenax nivalisSnow Bunting
  • Pooecetes gramineusVesper Sparrow
  • Rhynchophanes mccowniiMcCown's Longspur
  • Sialia sialisEastern Bluebird
  • Spizella breweriBrewer's Sparrow
  • Spizella passerinaChipping Sparrow
  • Spizelloides arboreaAmerican Tree Sparrow
  • Turdus migratoriusAmerican Robin
  • Tympanuchus pallidicinctusLesser Prairie-Chicken
  • Tyrannus tyrannusEastern Kingbird
  • Vireo belliiBell's Vireo
  • Vireo olivaceusRed-eyed Vireo
  • Zenaida asiaticaWhite-winged Dove
  • Zenaida macrouraMourning Dove
  • Zonotrichia atricapillaGolden-crowned Sparrow
  • Zonotrichia leucophrysWhite-crowned Sparrow
Hurlbert, Olsen, Sawyer & Winner 2021, Avian Diet Database, Scientific Data 8: 260 (CC0)

Direct food only: birds recorded eating this genus across North America. Caterpillars on host plants also feed nesting birds. NC Native Plant Society: butterfly gardening

No records yet · Ants · Beetles · Flies · Adult butterflies / moths · Other wasps · Other insects

Growing and identification

Plant details

Family
Amaranthaceae
Flower color
White or green

Safety has not been reviewed for this plant; check toxicity and thorns before planting.

Growing sources and scope
  • Bloom · “July to December” · FloraQuest: Carolinas, Georgia (Southeastern Flora Team), phone app (app page) · Carolinas and Georgia
  • Flower color · “White or green” · Lady Bird Johnson Wildflower Center
  • Height · “Up to about 10 feet” · Lady Bird Johnson Wildflower Center
  • Life cycle · “Perennial” · Lady Bird Johnson Wildflower Center
  • Light · “Partial shade; Full sun (documented habitat)” · FloraQuest: Carolinas, Georgia (Southeastern Flora Team), phone app (app page) · Carolinas and Georgia
  • Soil · “Water; Wet (documented habitat)” · FloraQuest: Carolinas, Georgia (Southeastern Flora Team), phone app (app page) · Carolinas and Georgia
Also known as

Saltmarsh Water hemp

Conservation status

Florida rankSNR
Global rankG5
FL statusNot verified
Federal statusNot verified

Conservation source Global and federal source

In your garden

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Sources