Question
during what season can acorn trees be pruned in West Texas ?

Answer
The best season to prune oaks is the winter months. There are proper ways to prune trees and if not follow could result in the killing of the tree. I would suggest you contact the Texas Extension Service and ask for assistance in how to prune your oaks. Their web contact page is you can select the county you are in and get the contact information for that county.

http://county-tx.tamu.edu/