I get a lot of my specialty items at Highland Farms ( Mississauga location at Hurontario and Matheson is closest to me). I find that I can get just about anything I need there from goats milk yogurt to organic butter from Quebec to Kosher chicken. They seem to carry a wide variety of ethnic foods--Italian, Polish, Oriental, Greek and even Jewish products.
Having said that I noticed a little rack on display at the end of the packaged organic goods aisle ( which is quite extensive BTW) of Bob's Red Mill packaged seeds, grains etc. I am pretty sure I saw some stone ground grits there.