Garden yellow loosestrife

Perennial herbaceous plant reaching 1 m. Introduced to Québec. Grows in fields and near water.

There are 105 observations of Garden yellow loosestrife in Québec, mostly in Capitale-Nationale, Chaudière-Appalaches and Montérégie, and it has been reported in 12 of the 17 regions. They peak in July and become rare from October to May.