Midyim Berry (Austromyrtus dulcis). A low spreading shrub with dainty foliage developing a reddish shade in colder climates. The white tea tree like flowers are followed by sweet edible mauve-white speckled berries. A very decorative ground cover.
Dave Wilson Nursery fruit tree pruning method: high density and successive planting. And this link goes to videos demonstrating planting practices, espalier techniques, etc. http://www.davewilson.com/video/video_Index.html