This section is from the book "The Gardener's Monthly And Horticulturist V22", by Thomas Meehan. See also: Four-Season Harvest: Organic Vegetables from Your Home Garden All Year Long.
The apple tree borer (Saperda bivittata) is the most destructive insect in our young apple orchards. More trees are killed by this insect in New Hampshire than in any other way. In large trees there seems to be no better method of destroying them than by using a knife and wire. But with small trees that are just set or are but a few years old, the following method of protection was adopted by a friend of ours having a young orchard infested with these insects, which he found quite successful in keeping them away.
Having some strips of wire screening such as are used for windows, he put them around his trees, bringing the ends together and fastening them as stove pipe is fastened, leaving a space between the tree and screening of about an inch, which was filled with waste cotton. This will last four or five years and proves an effectual remedy.