Print or PDF Thinning Peaches/Nectarines Dr. Teryl Roper, Pomology Professor at USU, provides the following information for proper peach thinning. We are past the window for thinning apples and pear trees for 2017.  In northern Utah there is still time to thin peaches.  Cherries, plums, and apricots are generally not thinned.  Fruit set on fruit … Continue reading Backyard: Thinning and Bee Info