Stink bug

Brown marmorated stink bugs are shield-shaped, about three-quarters inch long, and mottled brown with alternating light and dark banding on antennae and leg edges. You may find them on flowering plum and other Prunus species in summer. They feed by piercing plant tissue with their straw-like mouthparts, causing stippling and wilting.

Stink bugs pose minimal threat to ornamental stone fruits in western Washington. Hand-pick individuals and clusters of nymphs or adults from plants during the day. Remove plant debris near ornamentals to eliminate overwintering shelter. Do not use broad-spectrum pesticides unless populations are severe; selective management preserves beneficial insects and naturally occurring parasitoids.