One thing no one seems to have mentioned about the hua jiao peppercorns is that the plant they grow on is actually a TREE. A small tree, but a tree nonetheless (with bark, wood, branches, etc. etc.). So I'm not saying you can't grow one, but it might be a little more work than you expected. I remember several years ago the peppercorns were banned in the US (they are always being banned on and off by the USDA for like 6 month periods, because the pepper corns are sometimes found to have citrus canker, which would hurt US farmers apparently) and my wife and I actually came across one of the trees in a local park in the MD suburbs of DC. It had a plaque on it, that's how I knew what it was. We almost decided to pick some of the peppercorns and use them, but I wasn't 100% sure if the tree we were looking at was exactly the right species or not. Anyway, it was a short 7 ft tree alright.