Pale swallow-wort

Perennial climbing plant. Introduced to Québec and invasive. Grows in fields and in forests.

There are 216 observations of Pale swallow-wort in Québec, mostly in Outaouais, Montréal and Saguenay–Lac-Saint-Jean, and it has been reported in 8 of the 17 regions. They peak in June and July and become rare from November to April.