At least not from the clones I have here. The leaves just turn darker, rust, and then fall off. Not a showy tree at all. Poplars are not toxic to horses - that's good. They are not toxic to deer either - that's bad.
Deer consider poplars a delicacy.
There are many ways to discourage deer from chewing on your tender tree tops. Below is a link to a couple of products that are supposed to work. As I think of other problems with these trees, I will add them to this page.