Bark shedding on state fair trees
Bark is shedding on my state fair apple trees. None of my other varieties are having this problem - zestar, prairie magic, frostbit, honey crisp. What’s causing this? Will the trees survive? The branches aren’t dead and are beginning to bud.
Anoka County Minnesota
Apple trees do not normally shed bark. It is a sign of an injury or insects. We need more information on the tree...age, location, any injury or sunscald. We also need some good photos.
The tree is about 5 years old. It is planted in well-drained sandy loam soil. The tree is about 7 ft high. None of the other apple trees, other than the state fair, show any signs of sunscald. Could this be fire blight?
I can't tell for sure but it could be fireblight. The sure sign of it is a shepard's crook at the end of each branch. Even infected branches will leaf our using stored energy. They die off later. I am giving you a link to a diagnostic page on apple tree diseases but if I were my tree I would take it down before the others are infected. Whatever you do, do not prune that tree and then use your pruners on other trees until they have been disinfected. I also am giving you a link to a web site where you can find a certified arborist to come out and make an on-site diagnosis. http://apps.extension.umn.edu/garden/diagnose/plant/fruit/apple/branchdiscolored.html http://www.treesaregood.org/