Dame's rocket

Biennial herbaceous plant reaching 1.4 m. Introduced to Québec and invasive. Grows in urban areas and in forests. Purple flowers, from May to July.

There are 935 observations of Dame's rocket in Québec, mostly in Montréal, Capitale-Nationale and Estrie, and it has been reported in 15 of the 17 regions. They peak in June and become rare from August to April.