The adult plum curculio overwinters:

• A. In debris in and around the orchard
• B. In bunch grasses
• C. In plum trees
• D. Underground around fruit trees

Answer: (A)

Overwintering is done by adult plum curculios settling into protected surface habitats where they can stay warm and moist through the winter. They survive by hiding in debris and leaf litter on or near the orchard floor, often in prune piles or under boards and similar ground cover. This debris-based shelter provides the insulation they need, and it’s why sanitation practices—removing fallen fruit and orchard debris—help reduce their numbers for the next season. They don’t typically overwinter in bunch grasses, inside the plum trees, or underground around the trees, making debris in and around the orchard the correct overwintering site.