PLANTS
Black alder
20–30 mHeight
Perennial tree reaching 20–30 m. Introduced to Québec and invasive. Grows in marshes.
There are 44 observations of Black alder in Québec, mostly in Montérégie, Outaouais and Montréal, and it has been reported in 9 of the 17 regions. They peak from July to September and become rare from December to March.
