Fruit trees yield all kinds of foods to enjoy at various times of the year, but sometimes the weather doesn't cooperate. If fruit is developing on the trees, or even when the blooms are blossoming, freezing temperatures do harm by keeping fruit from producing properly. There are several ways to prevent damage from ruining your harvest including the use of fans, heaters, wrapping, even water.
Run power cords to the area where the trees are located. If the trees are a long way from a power source, you might need to use a generator.
Plug in a variety of freeze helpers such as large fans, space heaters or heat lamps. While you won't use them all at the same time, the heaters and heat lamps would work well together. Heaters stay on the ground near the base of trees and allow hot air to rise through the branches, while the heat lamps hang in the branches, giving them a closer heat source. Fans keep air moving so frost cannot settle on fruit or buds.
Spray fruit trees with mist during extremely cold temperatures. The mist freezes over the branches, fruit and buds. This thin layer of ice acts as a shield to outside weather conditions and protects the tree from burn.
Wrap small trees that are not fully grown in burlap. The cloth shields the young trees against wind and keeps off frost.