Index / Search / Polygonum arenastrum

§1 Plant

Polygonum arenastrum Jord. ex Boreau

vernacular oval-leaf knotweed — species · Polygonaceae


USDA
POAR11
GBIF
5334294
Rank
species
oval-leaf knotweed (Polygonum arenastrum)
Platephotograph · Yura YahnkeCC BY-NC source · iNaturalist ↗

§2Habit & range

Habit and range

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

Native status, by region

  • AK Alaska Introduced
  • CAN Canada Introduced
  • HI Hawaii Introduced
  • L48 Lower 48 States Introduced
  • VI U.S. Virgin Islands Introduced
§2b

County-level range

· 388 counties across 13 states/territories
Legend Native · 0 Introduced · 388 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 388 counties across 13 states/territories.

Arkansas view state ↗ 3 I
Illinois view state ↗ 102 I
Indiana view state ↗ 7 I
Iowa view state ↗ 18 I
Kansas view state ↗ 105 I
Kentucky view state ↗ 14 I
Minnesota view state ↗ 52 I
Mississippi view state ↗ 15 I
Montana view state ↗ 11 I
New Jersey view state ↗ 7 I
New York view state ↗ 43 I
Pennsylvania view state ↗ 9 I
Vermont view state ↗ 2 I

§5Sources & provenance

USDA PLANTS

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

plants.usda.gov/POAR11 ↗

GBIF Backbone

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

gbif.org/species/5334294 ↗

Record version

Cached and built locally. Source version on this record:

usda-plants-mt-2026-05-26

fetched 2026-05-26T07:25:30Z