How to prune quercus robur 'fastigiata'

Midsummer (July) or midwinter (December–January), avoiding spring and autumn. Remove dead or crossing branches at the collar. Do not head back the columnar leaders — this ruins the natural form and stimulates dense water-shoot regrowth. All pruning wounds on oaks should be made cleanly to minimise decay entry.

As needed; rarely requires pruning beyond deadwood removal. Quercus robur 'Fastigiata' (columnar English oak) naturally maintains a tight, upright column and needs very little pruning. Remove dead, diseased, or crossing branches as needed. Avoid pruning in spring (oak processionary moth risk in the UK) or early autumn. The columnar form is genetic — do not try to reshape it.

Remove dead or crossing branches at the collar. Do not head back the columnar leaders — this ruins the natural form and stimulates dense water-shoot regrowth. All pruning wounds on oaks should be made cleanly to minimise decay entry.