Plum Curculio adults are dark, brownish gray, 1/4in(6mm) beetles with a wart-like hard wing covers, a prominent snout, and  white hairs on the body. They overwinter under fallen leaves, stones, logs, and other garden debris, flying to trees as blossoms open.

Susceptible Plants- Plum curculio feeds on nectarines, plums and apples primarily, but also apricot, cherry, and peach.

Life Cycle- The adult plum curculio females feed and lay round white eggs just under the skin of the fruit. The eggs hatch in five to ten days into plump, white grubs with brown heads. These larvae feed within the fruits for 2 to 3 weeks; when the fruit drops; they exit and pupate in the soil. Second generation adults emerge in late July to late October; feed on rope or fallen fruit until fall, then move in shelter to hibernate.

Symptoms- Plum curculio adult females deposit a single egg just under the fruit skin, leaving a crescent shaped sear at each egg-laying site. Newly hatched larvae feed inside the fruit, causing it to drop, rot or develop deformed growth.

Prevention and Control- Knock beetles out of the trees onto a drop cloth by sharply tapping branches with a padded stick; gather fallen plum curculio beetles and drop into soapy water. For this control to be effective, you must do this twice a day throughout the growing season. Every other day pick up the fallen fruit. Home gardeners can help reduce future problems by picking up these damaged fruit as they fall off the tree and destroying them before the adults emerge. In stone fruit, the plum curculio larvae will only complete development in fruit drops.

Natural control of the curculio results from winter mortality, attacks by birds and other predators, and from parasites. Sanitation can also lessen damage. Pick up fallen fruit two to three times a week and put it in a plastic bag, tie the bag tightly and place it in the trash can. This will help keep larvae in fallen fruit from developing in the soil and, if done regularly, can minimize damage from plum curculio.

Surround WP a crop protectant is made from specially modified Kaolin clay, it is the only kaolin product registered for agricultural use. When sprayed on fruits or vegetables, it forms a barrier that protects from many pests. The white barrier not only repels pests, it causes irritation, confusion, and is an obstacle for feeding and egg-laying and is affect against plum curculio.