Cherry tree

Asked June 12, 2016, 10:15 AM EDT

The picture is from a sour cherry tree. Can you identify the growth in the branch. It bubbled up and is hard. I have two trees and both have some on. I can say I did not spray the trees this year, not good. Hope you can help

Lehigh County Pennsylvania

1 Response

The trees are infected with black knot. Below is a link that includes information on symptoms and control.
http://ohioline.osu.edu/factsheet/plpath-fru-31