I am having some trouble identifying a young tree that is growing in my yard.
It has been there for around 3 or 4 years and is now a little under 10 feet tall. Bark seems to be a deep, slightly reddish brown and the leaves are serrated. I am in Mississauga, Ontario, Canada (Zone 6A, I believe).
I have a few photos below, they were taken a year or two ago when the bark looked a little more green in areas. It seems like a much darker brown/ reddish brown now.
Thanks in advance!