Many of these pests / diseases are making their way around again. Be sure to monitor your plants, as many of these issues are easily dealt with in the early stages.
Larvae can be effectively controlled with a neem oil product or an insecticidal soap. Spray only the leaves (both sides), in the morning as neem oil can possibility hurt pollinators (More research needs to go into that). The strategy is to find larvae while they are still small and before damage becomes severe, like our roses! There is no need for control after the larvae have finished eating and left the plants, give or take mid-July.
One last note, these are not caterpillars, they are actually primitive wasps, so Bt or Bacillus thuringiensis will not work.
Oak wilt is confused with other problems such as drought, construction stress, borers, and root…
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