Kebnat
PLANTS

Prostrate knotweed

Polygonum aviculare

Plants
NativeHerbAnnual · Perennialmai to novembre
Prostrate knotweed, photo 1 of 5
Prostrate knotweed, In flower
Prostrate knotweed, Flower buds

Annual herbaceous plant. Grows in fields and in urban areas. Flowers from May to November.

There are 317 observations of Prostrate knotweed in Québec, mostly in Montréal, Capitale-Nationale and Montérégie, and it has been reported in every region. They peak from July to September and become rare from November to May.

Through the year

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Where to see it

  1. Montréal91
  2. Capitale-Nationale51
  3. Montérégie44
  4. Lanaudière25
  5. Laurentides21
  6. Outaouais16
  7. Laval15
  8. Chaudière-Appalaches8
  9. Bas-Saint-Laurent8
  10. Côte-Nord8
  11. Saguenay–Lac-Saint-Jean7
  12. Mauricie6
  13. Gaspésie–Îles-de-la-Madeleine5
  14. Centre-du-Québec5
  15. Estrie4
  16. Nord-du-Québec2
  17. Abitibi-Témiscamingue1

Habitat

FieldsHubert Figuière
Towns and gardensAlain Rouiller

Similar species

Common knotweedPolygonum arenastrum
Milk purslaneEuphorbia maculata
Leathery knotweedPolygonum achoreum
Common purslanePortulaca oleracea
TOXIC
Field bindweedConvolvulus arvensis
Spear saltbushAtriplex patula
Common sheep sorrelRumex acetosella
TOXIC
KochiaBassia scoparia
LambsquartersChenopodium album
CarpetweedMollugo verticillata
Bushy knotweedPolygonum ramosissimum
Water-pepperPersicaria hydropiper