Live materials require a phytosanitary certificate.There are a few Canadian growers that ship their plants, like the Lily Nook. What do you want to buy?

I'd like roses, Hydrangea, shrubs with some winter interest.

I'll bet if you post in the Far North forum, you'll get some answers. The phyto certificate is always a stumbling block that most companies don't want to deal with.

Palatine, Pickering, & Hortico all ship roses to the US. Palatine & Pickering are the best of the 3, Hortico sometimes sends kind of small plants.

Thanks everyone. Appreciate your help.

IF YOU ARE LOOKING FOR HERBS,RICHTERS OUT OF ONTARIO SHIPS T,HEM,THEY ALSO HAVE FRUIT PLANTS AND VEGATABLE SEEDS.

Thanks for the information, Eugene.
No need to shout, though. We here you just fine. :-)

(If you didn't know, posting in all capital letters is equivalent to shouting [or yelling], and is considered rude.) It's obvious that is not what you meant, but someday you are going to inadvertently get yourself into trouble. :-)