Plum trees are a favorite for many backyard gardeners. The fruit trees are quite attractive and the fruits are juicy, sweet and delicious. When selecting plum trees, keep in mind that some, like Stanley, are self-pollinating, while others require another variety nearby for pollination. Choose plum trees that are appropriate for your grow zone. Gurney's carries several varieties of plum trees, including semi-dwarf varieties that require less space and are easier to harvest.