Knotweed family
In Québec, the family Polygonaceae (order Caryophyllales) counts 55 species of plants. The stars? Japanese knotweed, Arrowleaf tearthumb and Spotted ladysthumb, the most often observed. The richest region: Montérégie, with 35 species. Every species has its own page: photos, its season, its habitat and the best places to see it near you.






