"They are galls caused by the trees reaction to insects laying their eggs in the leaves. The tree's tissues expand and grow around the developing egg and the resulting larvae that feeds on the plant tissue before emerging as an adult. The galls may not be aesthetically attractive but they are not especially deleterious to the trees. There is really no way to "treat" them since the insect is safely ensconced within the gall and won't be reached by any insecticide. "
"They are galls caused by the trees reaction to insects laying their eggs in the leaves. The tree's tissues expand and grow around the developing egg and the resulting larvae that feeds on the plant tissue before emerging as an adult. The galls may not be aesthetically attractive but they are not especially deleterious to the trees. There is really no way to "treat" them since the insect is safely ensconced within the gall and won't be reached by any insecticide. "
"They are galls caused by the trees reaction to insects laying their eggs in the leaves. The tree's tissues expand and grow around the developing egg and the resulting larvae that feeds on the plant tissue before emerging as an adult. The galls may not be aesthetically attractive but they are not especially deleterious to the trees. There is really no way to "treat" them since the insect is safely ensconced within the gall and won't be reached by any insecticide. "
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