Every year we would cut this tree off at the base in early summer and every year it would grow back. Finally, we decided to let it grow. It's now over 8 feet tall after one growing season. We're in north-western Alberta (Grande Prairie), on a quite shady lot.

Any thoughts as to what it could be? If you need more info or pictures please let me know.

Thanks!

Here is a link that might be useful: Pictures