On 18 Sep, 07:07, Dave Poole wrote:
Duncan, both sessile and pedunculate oak are relatively common
constituents of old hedgerows and easily adapt the extreme trimming
applied by farmers. |snip\

There was a TV programme about an ancient oak tree about a year ago.
It showed the life of such a tree over a period of about 1,000yrs. It
seems that oak can sit comfortably in the hedgerow for hundreds of
years, awaiting their chance to grow to mature height as soon as the
hedgerow is removed.

Chhers
Compo