I recently lost a tulip tree, because insects got under the bark on one side, near the base of the trunk. Despite spraying, the area spread and the tree was destroyed.
Now, I have the same problem developing with an apple tree. One one side of the wound, the tree has sealed, but on the other, bark continues to recede.
When I peek under the bark, I often find earwigs.
My questions are: * Are the earwigs eating the tree, or are they just seeking shelter during the day? * What common bugs might cause this problem and how can I control them?
Thanks!
--Bill