I have a tree hedge all round my garden which seems to by dying off from the bottom up. Its is going very brown. I would like to save it as it provides shelter and also privacy from next doors garden. I have attached a photo so you can see what i mean. I would be very grateful for any advice.
There are a number of diseases, pests, and environmental/care conditions that can cause this. The following article explains some of the possible causes:
Check your hedge for any visible pests, such as aphids or scale insects. Also, make sure you are not pruning the hedge too hard, since this can cause dieback.