Quaking aspen (Populus tremuloides) is the most widespread tree species in North America. As a keystone species, aspen ...

Aspen, beech, and birch sap seen as small niche, but could have potential for new revenue streams for maple producers.

However, aspen also has the ability to send up new young shoots, or suckers, off the root system of an established tree, sometimes up to 30 metres away, if the tree is large.