He predicts the current batch of eggs will hatch around the end of July. The caterpillars eat oak leaves to the point of defoliation, which, he says, "is a stressor, but one or two bad infestations is not going to kill the tree."
Mr. McClenahan says the trend is not to spray with pesticides. Some clients, however, opt for a preventative treatment, which starts at $125 per tree. Natural predators, such as birds, spiders and yellow jackets, can be effective in cutting back the population, too.
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