More questions then Jane: Did the leaves come on the tree and then die as if burned by fire? Did you fertilize the trees?
Jane: My husband says the trees were OK until he sprayed with the fruit spray preventive. New info to me. TreeBoss: If sprays are applied at the wrong time or wrong rate, they can severely damage or kill trees. Examples of wrong times would include ‘muggy’ weather — you shouldn’t apply some insecticides in hot, humid weather that is typical during July/August afternoons. Another example would include ‘dormant oil’ spray being applied either too early in the fall or too late in the spring, especially on trees with thin bark. I saw a case where several thousand dollars worth of beech trees were killed by a dormant oil spray being applied too late in the spring. As the old saying goes, always read and follow label instructions on the product you are using (before you use it). As a general rule of thumb with most tree and shrub spraying, it is much better to make your spray applications in the cool of the early morning instead of in the heat of the day. When it is still cool there is much
