Disease on my young espalier apple

Asked May 29, 2020, 9:45 AM EDT

We just planted this espalier apple tree 2 months ago and noticed the spots and deterioration On the leaves. There are 4 varieties and it appears worse on the golden delicious. I can’t see any insects on the leaves. Here are some pictures. What is it? I’m thinking it’s apple scab.

Marion County Oregon

1 Response

It does look like scab. 'Golden delicious' is considered susceptible. There is information on management of this disease in the link below to the PNW Disease Management Handbook. Feel free to write with questions.