I have a few young fruit trees (1 each of a Liberty apple, Canadian Harmony peach, Bartlett pear, and Satsuma plum). I live in hardiness zone 5b in northern Utah, USA. The apple tree has survived a couple winters and the plum tree has survived one winter. This will be the first winter for the other 2 trees.
One thing that I've noticed is that the apple tree looks as if its bark is peeling (see below).
From what I've researched, this is due to freeze damage when the sap in the tree freezes and thaws during the winter months. I'm planning on wrapping my trees this year to prevent this on my other trees. However, I have a couple questions about winterizing trees:
- Should I wrap all my trees every year, or is it not needed when they're more mature?
- My trees are planted in my grass lawn. Do I need to add additional mulch for frost protection, or does the grass provide enough insulation?
- Is there more I should be doing to overwinter my trees?
I still consider myself an amateur when it comes to trees, so any help would be appreciated so that I can give my fruit trees the best chance to thrive next year.