Depending on your climate and your willingness to overwinter pots indoors, citrus trees can fit in perfectly here. Many cocktails and highballs demand a wedge of lime or a sliver of lemon peel. Over the years, citrus plants, including dwarf varieties that lend themselves to pots, have become popular and are often available in garden centers. While they take some nurturing because of their tender nature, they can become pets and even give back fruit in agreeable conditions.
I love growing this. As a backdrop you can train it on a fence, it can cover a trellis in one season, and it had a very pretty look.