Siberian elm

Perennial tree reaching 25 m. Introduced to Québec and invasive. Grows in forests and in urban areas. Flowers from March to May.

There are 480 observations of Siberian elm in Québec, mostly in Montréal, Montérégie and Lanaudière, and it has been reported in 11 of the 17 regions. They peak in August and September and become rare from December to March.