Orchards in which mouse guards are emplaced should be examined for signs of damage. Collections of frass produced by feeding of dogwood borer on burrknot surface White latex paint brushed on the exposed portion of the rootstock will prevent new infestations of the borers, and also protect against southwest injury to the bark. Dilute trunk applications of an insecticide with good residual activity can provide control of established infestations. Lorsban 50WP or Thiodan 50WP are the most effective materials if applied during the period between July 15 and August 15, bearing in mind the specific pre-harvest intervals. American Plum Borer Eggs of this moth are deposited on cherry and peach trees in cracks under loose bark and hatch in a few days.
Larval tunnels are shallow with frequent openings to the outer bark, where red frass accumulates.
The larvae can't bore into the cambium unless a wound of some sort is present. Because most of the tart cherries in New York are mechanically harvested, APB has become the major borer pest in some orchards in the Lake Ontario fruit growing region. Cocoon of American plum borer Directed trunk sprays are recommended in cherries at petal fall, when first generation adults are emerging. Adults begin to emerge during bloom and the flight peaks around petal fall or shortly thereafter. Lorsban 4E used for lesser peachtree borers at petal fall will provide control against any APB that may be present.