Index / Search / Polygonum lapathifolium

§1 Plant

Polygonum lapathifolium L.

vernacular curlytop knotweed — species · Polygonaceae


USDA
POLA4
GBIF
7291486 syn.
Rank
species
curlytop knotweed (Polygonum lapathifolium)
Platephotograph · hemulen_waCC BY-NC source · iNaturalist ↗

§2Habit & range

Habit and range

Growth habit
Forb/herb
Duration
Annual
Group
Dicot
Family
Polygonaceae Juss.
Genus
Polygonum
§2a

Native status, by region

  • AK Alaska Introduced
  • CAN Canada Introduced
  • GL Greenland Introduced
  • L48 Lower 48 States Native
  • SPM St. Pierre & Miquelon Introduced
§2b

County-level range

· 1,271 counties across 38 states/territories
Legend Native · 1262 Introduced · 9 Both · 0 Hover a county for detail.

§3Cultivation

No cultivation specs.

USDA has not characterised this taxon. Roughly four out of five plants in the database lack the detailed cultivation record present here — typically because they have not been the focus of NRCS Plant Materials work. Range and distribution data are unaffected.


§4Counties, by state

Recorded in 1,271 counties across 38 states/territories.

Alabama view state ↗ 7 N
Alaska view state ↗ 9 I
Arizona view state ↗ 11 N
Arkansas view state ↗ 32 N
Delaware view state ↗ 1 N
District of Columbia view state ↗ 1 N
Florida view state ↗ 13 N
Georgia view state ↗ 5 N
Illinois view state ↗ 93 N
Indiana view state ↗ 50 N
Iowa view state ↗ 32 N
Kansas view state ↗ 97 N
Kentucky view state ↗ 40 N
Louisiana view state ↗ 38 N
Maine view state ↗ 15 N
Massachusetts view state ↗ 14 N
Michigan view state ↗ 61 N
Minnesota view state ↗ 65 N
Mississippi view state ↗ 12 N
Missouri view state ↗ 85 N
Montana view state ↗ 34 N
Nebraska view state ↗ 56 N
New Hampshire view state ↗ 10 N
New Jersey view state ↗ 16 N
New Mexico view state ↗ 15 N
New York view state ↗ 54 N
North Carolina view state ↗ 21 N
North Dakota view state ↗ 46 N
Ohio view state ↗ 58 N
Oklahoma view state ↗ 34 N
Pennsylvania view state ↗ 48 N
Rhode Island view state ↗ 4 N
South Dakota view state ↗ 30 N
Tennessee view state ↗ 35 N
Vermont view state ↗ 11 N
Virginia view state ↗ 37 N
West Virginia view state ↗ 14 N
Wisconsin view state ↗ 67 N

§5Sources & provenance

USDA PLANTS

Symbol, taxonomy, distribution, cultivation specs, native status. Public domain.

plants.usda.gov/POLA4 ↗

GBIF Backbone

Canonical taxonomic identity, synonym resolution, cross-refs. CC0.

gbif.org/species/7291486 ↗

Record version

Cached and built locally. Source version on this record:

usda-plants-mt-2026-05-26

fetched 2026-05-26T09:28:40Z