In the past, there have been only a couple different kinds of apple trees that you could buy. But now, thanks to the wonders of genetic engineering, if you want to buy an apple tree you are able to choose between many different types
Great beginners article listing a few of the plants which are ideal for Companion Planting for Pear Trees - this is something that I am looking to do as I have two mature pear trees and have recently cleared brush out from underneath them.
Starting an Orchard: Apples, Cherries, Peaches, Plums and Pears - Organic Gardening
Eau de Vie: French technique of growing a fruit in a bottle. When the pear blossoms begin to appear, slip them into a bottle, tie the bottle to the tree and the tree will produce the pear in the bottle.
A visual aide for pruning fruit trees at planting. Proper pruning makes for a stronger central leader (the trunk) and stronger scaffolding (side branches). And, on semi-dwarf and dwarf fruit trees, pruning leads to earlier production.
Bradford Pear medium sized ornamental tree with a rounded shape dark glossy green leaves turn a spectacular gold to red in fall masses of white flowers blossom in early spring fast growing to tall and wide