We have a 7 foot stucco wall on the east side of our backyard that I would like to plant a couple of citrus next to that would create some privacy from a two story home next to us. Rapid growth would be good and being able to maintain at about 20 feet. Type of fruit is not that important. Fullness and visual appeal is of most importance, but thought something edible would be a plus. Or, if anyone has ideas for some other kind of tree, I would appreciate that advice also. Vertical height more than spread is better. Horizontal planting area about 20 feet. The backyard is fairly small and I already have a mesquite tree at the west wall.