posted 11 years ago
It partly depends on your lot, your house, and your climate. Some climates have an abundance of sun, or rain. Some lots have tons of space, and others are tiny, but in strategic locations. Some houses are huge, tall and dominate the lot. Others are tiny houses on huge lots with plenty of extra space beyond the professional necessity. Tall house on small lot makes lots of shade= bad in British Columbia, ok in South Florida. Many food forests gradually move on up to very tall trees, which you don't want really near your house. In that case, you might not be able to use deciduous trees to shade your house in summer, and heat and brighten your house in winter. On a tiny urban lot, you don't really have so many zones.
John S
PDX OR