By far the best place in Southern Ontario for exotics is A&M Woods in Cambridge. I haven't been there in several years but the last time I was there their selection of imported species was such that a person could spend 2 or 3 days there. There is also a place in TO but I've never been and from what I have heard they don't have much, possibly nothing for a bowyer. There is also another place North of TO in Paulgrave, I think, called Century Mill. I've been there and they're not bad but they don't compare to A&M