What do I need to do to save my hedges?
Bronzing on Yew can be a number of things. When did you plant it and what is the soil like?
Bought the house last july with them as far as the soil I"m not sure
As the other Yews look in the prime of health I think the others need a good general feed and consistent water. I think that the other plants are competing for these nutrients and the end result is the weaker Yew's are looking bronzed and thin.