Brown rot and cherry leafspot are diseases of concern now, especially with rain at the current high temperatures. Plum curculio is expected to be a potential problem on tart and sweet cherries after shuck split. Sweet cherries are in late petal fall. We still see good to very good crop potential. Brown rot control is needed now and plum curculio control at shuck split.
Japanese plums are in the shuck.
Black knot and brown rot spray programs should be underway. Some limb dieback noted due to mid winter damage. This accumulation is over the threshold of 200 degree hours base 65 F where the model predicts that fireblight bacteria are common on open flowers. A rain or heavy dew would be sufficient to initiate an infection. Growers using Mycoshield will need to spray in advance of rains.