Salt and Pepper to Taste

I've just realized the shear joy that growing my own Black Pepper plant would bring. In contrast, it's disappointing that I can't grow my own salt.

That further made me think of all of the delightful things that I can't grow in my climate, like cinnamon, cloves, nutmeg and meyer lemons. Further research brough me to find the existance of a type of a hardy orange (Poncirus trifoliata). Although the fruit is not really good for eating, the multi-season interest and twisted thorns make it something I'd like to try growing, especially the dwarf variety. Unfortunately, I can't find anywhere in Canada to buy a young tree, help?