Hi Tom,
Thank you for your question about your two sweet cherry trees. I cannot definitively determine what is happening with your trees from your photos.

I recommend you contact the Plant Clinic at the OSU Deschutes County Extension in Redmond. You can call the phone number listed below or send your photos and question to <personal data hidden>.

In addition to the photos of the leaves, I advise that you send photos of the entire tree to show the extent and pattern of the damage.

The person on duty will review your information, conduct necessary research, and contact you with findings or management options.

Summer Hours: Monday through Thursday, 9:00 to 5:00 pm, Friday 9:00 am to 1:00 pm.

Phone:<personal data hidden> x79630

We always welcome your home garden questions at the OSU Plant Clinic.