Minimize warm weather oak pruning!

Whilst it really depends on the reason for pruning, ash trees are ideally trimmed back during the late dormant season, i.e.

Proper trimming includes disinfecting pruning tools before you start….

late in the winter before the new spring growth starts to appear. The dormant season for a tree runs from late October to early shrubpruning.barted Reading Time: 5 mins. Thereafter, once the tree is established, prune your white ash once every three to four years. How to Prune White ash trees often grow with multiple trunks, also called leaders, developing.