I've oredered some last year from Whistlig Gardens, Ont., and am ordering again for this spring.
Excellent selection available -- some things you can't even get from the big guys in the US.
See link below....

PS. let us know what you're getting.
And maybe also join the Conifers GW forum -- there's a few Canadians participating, as well as a few folks from overseas.

Here is a link that might be useful: Whistlig Gardens

Thanks very much, I'll get in touch with them.