I have an oak tree (red oak?) which is about 45 +years old. I've noticed that many of the upper limbs are missing bark about half way out. #1 Are the limbs dying? They still produce leaves. #2 Should they be pruned all of the way back to the trunk OR cut-off where the bark exists? #3 Is this a result of lightning, disease, or poor pruning procedures? #4 Do you believe the tree should be removed or trimmed? Thank you

Greetings Tim,

Well, without pictures and without an on-site evaluation, it is often extremely difficult, if not impossible, to give expert advice regarding insect and disease problems on trees.

Sorry I can't be of more assistance, but I liken many (not all) insect and disease questions to a patient calling the doctor's office and asking the medical doctor whether or not the patient should amputate his own foot because it doesn't appear to look healthy :-) No doctor would ever give that recommendation over the phone or via email :-)

Therefore, your only recourse is to secure the services of a local certified arborist or possibly contact a Master Gardener from your county Extension office.