How to plant fruit trees intensively?
I dream about having a backyard filled with many varieties of fruit trees. I have about 1/2 acre flat and sunny. I'd like to plant a variety of stone fruits and citrus. I saw a post on planting intensively. I'm familiar with that principle when applied to vegetable beds, but how does one apply it to fruit trees? I'm not really interested in multi-fruit trees because I've heard they can grow lopsided. A landscape designer friend I spoke to said I have to keep semi-dwarf apple trees a minimum of 10 feet apart.