Hello, nanasgirls. I agree with the others that florist azaleas are not cold hardy enough for your winters. But, I may have some options for you. Consider cold hardy varieties of deciduous azaleas! Some of them will withstand pretty cold temperatures and, yes, they can be planted outside. For example, Tenino and Texas Pink can handle up to -20F (-28C); and the Northern Lights Series from the University of Minn tolerate -35F (-37C)winters and below.
I suggest that you browse one of my favorite azalea web sites, by a nursery called Greer Gardens in Oregon, for examples of offerings. I believe they will ship to Canada and have mail-order paper catalogs. Their URL is
www.greergardens.com. If that helps you, have fun shopping!
Luis