Apple Tree Issue After Thinning - Fire blight?
This is a third year honeycrisp apple tree in the Denver area. It produced a number of fruit this year, and after some research, I thinned the tree and did some experimental bagging (both paper and plastic).
A few weeks later, I started to notice some areas of the tree that had stubs or limbs that were dying... often surrounding the area where the fruit were thinned.
Is this fire blight or something else? I was under the impression honeycrisp was moderately resistant towards fire blight, so I'm surprised it affected so many areas of the tree? If it is fire blight, how do I treat/remove it? It will be a bummer if I have to remove some of the main scaffolding branches!