**Plant pear trees in a sunny spot except in climates where the sun is very strong. Protect them from winds that are cold or salt-laden. In cold climates, plant them on a northern or eastern slope to forestall early bloom.
Pruning apple trees in South Carolina home gardens and orchards. How to train and prune apples for fruit quality, pest control. Heading and thinning cuts, training neglected tree, watersprouts, suckers.
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.
While you may not be able to grow citrus trees in the cooler regions of the United States, there are a number of cold hardy fruit trees suited to USDA zone 4 and even zone Pears are ideal. Learn more about zone 4 pear trees in this article.
Starting an Orchard: Apples, Cherries, Peaches, Plums and Pears - Organic Gardening
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.