Friday, February 20, 2009

Growing Pear Trees

By Ben Steeler

Trees of at least two varieties should be planted, for pollination of one by the pollen from the other is usually necessary if the trees are to bear fruit. Trees may live 10 to 20 years; they may survive much longer, but they decline in vigor as they become older. When only four or five years old, one tree may produce 2 to 3 bushels of fruit annually; by the time it reaches 8 to 10 years of age, it produces 4 to 6 bushels annually.

Full-sized trees can be kept pruned to 15 to 18 feet and dwarfs grow only 8 to 10 feet. The leaves are noted for their shiny, glossy surface, and the blossoms are white.

Cut away all but the three strongest remaining side branches, then cut them back to 2- to 4-inch stubs. The stubs should be 6 to 12 inches apart, face in different directions and form angles of 45 degrees or more with the trunk. In subsequent years prune in early spring to remove low-hanging, crowded or crossing branches. Cut back overly long branches to control tree height. During the first spring, scatter 1 pound of 10-10-10 fertilizer in a wide circle around each tree, and repeat once about six weeks later. Use a water-soluble fertilizer, not the urea-type lawn fertilizer, which releases nitrogen so slowly that it stimulates late-season growth of young wood easily damaged by winter cold. Increase the amounts gradually in subsequent years, making a single application early in the spring. Mature trees may use up to 5 pounds of 1010-10 fertilizer annually, but the best indicator of fertilizer need is the leaf color. If it is dark green, no feeding is needed; if pale or yellow-green, use the fertilizer.

They are quite good for cooking, however, and these varieties will tolerate warmer winters than will common pears, doing reasonably well in far south. Many hybrid pears are very resistant to a bacterial infection called fire blight that affects most common pears.

Otherwise the crop may break the branches or be undersized and have inferior flavor and color. Each nectarine should be balanced by about 35 leaves, achieved by thinning fruit to hang 6 to 8 inches on the branches.

Peaches and nectarines generally ripen in midsummer Eat should be picked when they can be separated from the wigs with very little effort. Handle them carefully to prevent bruising. Home-frozen peaches that have been allowed to ripen fully are nearly equal in quality to those freshly picked from the trees.

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