Pale Smartweed
Persicaria lapathifolia
In the Carolinas and Georgia, found in bottomlands, bottomland fields, disturbed areas. Weakley, Flora of the Southeastern United States (2025), Carolinas & Georgia edition What its natural habitat tells you
Native to Arkansas. How scores work Is it native here?
Profile 94%
- Height
- 2–6 feet
- Light
- Partial shade, Full sun
- Soil moisture
- Dry to wet
At a glance
- Life cycle
- Annual
- Bloom
- June to December
Not yet recorded · Spread · Leaves
Recorded in 25 Arkansas counties.
Natural habitats
Places it grows wild. Not a planting requirement. Each habitat page lists the plants and wildlife also found there.
Floodplain and bottomland forests
Forests on low ground beside rivers and streams that flood from time to time.
Roadsides, fields and disturbed ground
Ground opened by people: roadsides, old fields, pastures, fencerows and lots.
Also found with this plant
Wildlife whose habitat models include habitats this plant grows in, in Arkansas. Shared habitat, not food. 27 animals.
Widespread birds also seen here (61)
Found in many habitats here, so not listed above.
- Alder Flycatcher
- American Goldfinch
- American Redstart
- American Robin
- Bald Eagle
- Belted Kingfisher
- Black-and-White Warbler
- Black-crowned Night-heron
- Blue Grosbeak
- Blue Jay
- Blue-gray Gnatcatcher
- Brown Creeper
- Canada Goose
- Cedar Waxwing
- Chimney Swift
- Cliff Swallow
- Common Nighthawk
- Common Yellowthroat
- Cooper's Hawk
- Double-crested Cormorant
- Downy Woodpecker
- Eastern Kingbird
- Eastern Screech-owl
- Eurasian Collared-dove
- European Starling
- Golden-crowned Kinglet
- Gray Catbird
- Great Horned Owl
- Hairy Woodpecker
- Harris's Sparrow
- Hooded Merganser
- Lincoln's Sparrow
- Mallard
- Mississippi Kite
- Mourning Dove
- Northern Cardinal
- Northern Flicker
- Northern Mockingbird
- Orange-crowned Warbler
- Osprey
- Pine Siskin
- Purple Finch
- Red-headed Woodpecker
- Red-tailed Hawk
- Red-winged Blackbird
- Ruby-crowned Kinglet
- Rusty Blackbird
- Sharp-shinned Hawk
- Song Sparrow
- Spotted Sandpiper
- Tree Swallow
- Tufted Titmouse
- Turkey Vulture
- White-breasted Nuthatch
- White-throated Sparrow
- Wood Thrush
- Yellow-bellied Sapsucker
- Yellow-billed Cuckoo
- Yellow-breasted Chat
- Yellow-crowned Night-heron
- Yellow-rumped Warbler
Who uses this plant?
43CaterpillarsGenus host records with ranges including AR
Genus host records with ranges including AR · Polygonum
- Achyra rantalisGarden Webworm Moth
- Acronicta insularisHenry's Marsh Moth, Cattail Caterpillar
- Acronicta oblinitaSmeared Dagger
- Anticlea multiferataMany-Lined Carpet
- Apantesis argeArge Tiger Moth
- Apantesis naisNais Tiger Moth
- Archips semiferanusOak Leafroller Moth
- Calothysanis amaturariaCross-Lined Wave
- Chionodes discoocellellaEyeringed Chionodes
- Costaconvexa centrostrigariaBent-Lined Carpet
Show all 43
- Dypterygia rozmaniAmerican Bird's-Wing
- Elophila icciusalisPondside Pyralid, Pondside Crambid
- Elophila obliteralisWaterlily Leafcutter Moth
- Emmelina monodactylaMorning-Glory Plume Moth
- Epiblema otiosanaBidens Borer Moth
- Eusarca confusariaConfused Eusarca
- Feltia subterraneaSubterranean Dart, Granulate Cutworm
- Haematopis gratariaChickweed Geometer
- Helicoverpa zeaCorn Earworm Moth
- Homophoberia apicosaBlack Wedge-Spot, Smartweed Groundling
- Hyles lineataWhite-Lined Sphinx
- Hypena scabraGreen Cloverworm Bomolocha, Black Snout
- Maliattha synochitisBlack-Dotted Lithacodia, Black-Dotted Glyph, Brass-Dotted Grass Moth
- Melanchra pictaPainted Arches, Zebra Caterpillar Moth
- Melanolophia canadariaCanadian Melanolphia, Variable Redmarked Looper
- Metarranthis duariaRuddy Metarranthis
- Nephelodes miniansBronzed Cutworm
- Nomophila nearcticaLucerne Moth, American Celery Webworm
- Orthonama obstipataThe Gem
- Ostrinia obumbratalisSmartweed Borer
- Ostrinia penitalisAmerican Lotus Borer, Lily Moth
- Parapoynx obscuralisObscure Pondweed Moth
- Patania silicalisHerbivorous Patania, Herbivorous Pleuroptya
- Prochoerodes lineolaLarge Maple Spanworm Moth
- Pseudeustrotia carneolaPink-Barred Lithacodia, Pink-Barred Pseudeustrotia
- Pyrrhia exprimensPurple-Lined Sallow, Purple-Lined Sun Moth
- Saucrobotys futilalisDogbane Saucrobotys
- Schinia spinosaeSpinose Flower Moth
- Scopula limboundataLarge Lace-Border
- Spilosoma congruaAgreeable Tiger Moth
- Spilosoma virginicaVirginian Tiger Moth, Yellow Woolybear Moth, Yellow Bear
- Strymon melinusGray Hairstreak
- Tharsalea hyllusBronze Copper
34BeesSoutheastern regional records
Southeastern regional records · Persicaria
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
15BirdsRecorded eating Persicaria in Arkansas
Diet records by plant genus, from studies across North America. Not a record from this state. Birds whose range includes Arkansas, most records first.
- SoraSeeds. 12 diet records
- Red-winged BlackbirdSeeds. 4 diet records
- American CootSeeds. 2 diet records
- Northern CardinalOther parts. 2 diet records
- Ring-necked DuckSeeds. 2 diet records
- American Pipit1 diet record
- American RobinFruit. 1 diet record
- American Wigeon1 diet record
- Blue-winged Teal1 diet record
- GadwallSeeds. 1 diet record
Show all 15
- Lapland Longspur1 diet record
- Lesser ScaupSeeds. 1 diet record
- MallardSeeds. 1 diet record
- Ring-necked Pheasant1 diet record
- Swainson's ThrushFruit and seeds. 1 diet record
Direct food only. Caterpillars on host plants also feed nesting birds. NC Native Plant Society: butterfly gardening
Flies 2
- Gymnosoma fuliginosa
- Trichophora ruficauda
Flower visits · Carlinville, Illinois, USA
Adult butterflies / moths 1
- Phyciodes tharos
Flower visits · Carlinville, Illinois, USA
Other wasps 5
- Astatus unicolor
- Eucerceris zonatus
- Philanthus punctatus
- Philanthus ventilabris
- Polistes variatus
Flower visits · Carlinville, Illinois, USA
Other insects 1
- Lygaeus turcicus
Flower visits · Carlinville, Illinois, USA
No records yet · Ants · Beetles
Birds that eat Persicaria 15
Diet records by plant genus, from studies across North America. Not a record from this state. Avian Diet Database (Hurlbert Lab), CC0 1.0.
- SoraPorzana carolina
- Red-winged BlackbirdAgelaius phoeniceus
- American CootFulica americana
- Northern CardinalCardinalis cardinalis
- Ring-necked DuckAythya collaris
- American PipitAnthus rubescens
- American RobinTurdus migratorius
- American WigeonAnas americana
- Blue-winged TealAnas discors
- GadwallAnas strepera
- Lapland LongspurCalcarius lapponicus
- Lesser ScaupAythya affinis
- MallardAnas platyrhynchos
- Ring-necked PheasantPhasianus colchicus
- Swainson's ThrushCatharus ustulatus
Plant details
- Family
- Polygonaceae
- Flower color
- White, pink or purple
Safety has not been reviewed for this plant; check toxicity and thorns before planting.
Growing sources and scope
- Bloom · “June to December” · Weakley, Flora of the Southeastern United States (2025), Carolinas & Georgia edition · Carolinas and Georgia
- Flower color · “White, pink or purple” · Lady Bird Johnson Wildflower Center
- Height · “2–6 feet” · Minnesota Wildflowers
- Life cycle · “Annual” · Minnesota Wildflowers
- Light · “Partial shade; Full sun (documented habitat)” · Weakley, Flora of the Southeastern United States (2025), Carolinas & Georgia edition · Carolinas and Georgia
- Soil · “Dry; Moist; Wet (documented habitat)” · Weakley, Flora of the Southeastern United States (2025), Carolinas & Georgia edition · Carolinas and Georgia
Also known as
Polygonum lapathifolium; knotweed
Conservation status
| Arkansas rank | SNR |
|---|---|
| Global rank | G5 |
| AR status | Not verified |
| Federal status | Not verified |
Will it fit your yard?
Check this plant against your county, sun and soil moisture. Conditions are checked in your browser.
Sources
- Atlas of the Vascular Plants of Arkansas (2013)
- USDA PLANTS
- Vascular Plants of North Carolina (NC Natural Heritage Program)
- Weakley, Flora of the Southeastern United States (2025)
- Arkansas occurrence source
- Shropshire & Tallamy 2025, Lepidoptera of North America north of Mexico, ZooKeys 1261 (ODbL)
- Noori, Seltmann & Orr 2026, A curated and integrated dataset for exploring global bee-plant interactions (GloBI), Zenodo, CC BY 4.0
- Smith, Bachelder, Russell, Morales, Mosher & Seltmann 2024, Bee-Specialization-Modeling v0.6.1 (specialist host table compiled from J. Fowler's pollen specialist bee lists), Zenodo, CC BY 4.0
- Hurlbert, Olsen, Sawyer & Winner 2021, Avian Diet Database, Scientific Data 8: 260 (CC0)
- Narango, Tallamy & Shropshire 2020, Few keystone plant genera support the majority of Lepidoptera species, Nature Communications