This revolutionary pruning method will give you more fruit growing options, because nearly any deciduous fruit variety can be trained to stay compact. Learn how and when to prune fruit trees so that they’ll thrive, even in small gardens. From MOTHER EARTH
There are lots fruit trees and berry bushes that do well in containers. Pick your favorites and have your own edible garden on your balcony patio or porch. Options include strawberries apples currants blackberries and more.
'Nagami' kumquat (Fortunella margarita) can be eaten flesh and all. Hardy to Zone the kumquat will need to go indoors during winter in cold areas. Make overwintering easier by setting large planters on casters.
The Art of Espalier: Growing Fruit Trees in Small Spaces