Hi - I need some advice also. We have a beech hedge on two sides of the property (some 80 metres in length) which is well established and thriving. Just spent 2 years renovating it back to a reasonable height, and am now clearing all of the ivy from the base. On the road side however there is a much older hawthorn hedge (maybe 50 m) on which ivy has really got a hold, with some sections where the hawthorn is dead. If I clear the ivy as much as I can, can I then grow beech through the existing hawthorn and gradually replace? Thanks in advance!!