No, beech hedge is not poisonous to sheep. Many farmers use beech hedge on their farms for the livestock to eat.
If you mean a beech hedge then August in the Northern Hemispere is best. If it is a tree there should be no need to prune it other than to shape it and you can do this at any time. If you do that too often it will become a hedge and be best done in August.
The Cut Leaved Beech Fagus heterophylia is an ornamental tree grown for its looks.
You should not cut much off of the top of a Cedar hedge. You should only cut 1 to 2 inches off to be safe.
The hedge was getting to tall.There is a neighbourly dispute over who owns the hedge.The hedge runs across the boarder which separates the two counties.
These branches are dead, cut them off.
Yes they will eat the lower new leaves and ones higher up too if they can get at them. They will also have a chew at the bark and if left to their own devices will ruin a newly planted hedge. Hares will decimate a newly planted hedge. They chop off the stems and strip the bark. If either beasts are attracted to a newly planted hedge fence it with chicken wire--both sides.
never saw your neighbor before and
The hedge can be clipped, but it is not part of the quest. They return to normal when you leave. (The clippers are used at the far left, to cut loose the hot air balloon. They are used later to cut the rope to a cage being carried by helicopter.)
Beech. Beech is a type of tree
Beech nut or beech mast.
A common answer is "when the saw is sharp", meaning that if you need to cut it, cut it when you are ready to do the work. Having said that, in general it is best to cut flowering plants just after they finish blooming (to avoid cutting off next year's blooms, which often are set shortly after this year's bloom ends) or in the late winter, before the hedge begins to show new growth. So, it depends on whether you need to consider blooming. Repost question with the name of the hedge plant and we will provide a more specific answer.