Fruit

Gumming from borers will exude in tendrils.

Gumming from borers will exude in tendrils.

Gumming from borers will exude in tendrils.

Gumming from borers will exude in tendrils.

Oval-shaped exit hole from a flatheaded borer.

Exit holes from shothole borer.

Ooze from bacterial canker on sweet cherry.

Bacterial canker causes the tissue under the bark to be streaked brown rather than solid brown (dead).

Gumming from bacterial canker will sometimes be milky in appearance.

Bacterial canker forms at tree wounds, such as branch crotches. Note old (dark) and newer gumming.

Pear fruit sawfly is a newly introduced pest. Adults lay eggs in flowers.

Risk map of grasshopper densities for the western U.S.

It is difficult to prune out all fire blight damage. Where it still exists, copper spray in spring will prevent bacteria from multiplying.

Peach twig borer overwinters in the tree, making it susceptible to dormant oil application.

Aphids on apricot are the first to hatch from eggs in spring. As buds swell, they can easily be killed with the dormant oil application.