Loquat: the tree is fast growing and drought tolerant, with dense foliage that can be pruned or espaliered to create a green wall. So useful is the loquat as an evergreen ornamental that many people don't realize the clusters of fruit are actually edible.
Do you live in North American? Love eating bananas, but don't like how many miles they have to travel to get to your shopping cart? Plant a paw-paw tree! Paw paws are called America's forgotten fruit and can replace bananas in modern-day recipes!