We have seen some damage due to climbing cutworms on Chardonnay. Since I’m not an entomologist, I’ll refer to Dr. Pfeiffer’s page for the description of the insect. Virginia Tech’s grape diseases and insects in vineyards has spray recommendations for cutworms. Some chemicals listed in the guideline can be harmful to beneficial insects such as bees which are very active right now with apple blossoms. Please refer to the label before you apply it. When you are in doubt, please consult local extension agents.