Question
I understand that cedar trees are bad for fruit trees, especially apples. I have a 5 acre lot, zone 7, central north carolina. Hardwoods are oak and hickory and none are doing well, at least 25% dead or dying. Bad drought year but this is a multiyear problem. Have probably a 2:1 if not 3:1 ratio of cedars to hardwoods. Could they be the problem. I have no issue cutting them (100? maybe), just don't want to go to that trouble without knowing if they contribute any good.

Many thanks,
Bill Cruse


Answer
There is a disease called cedar apple rust that will damage apple leaves and fruit. This rust needs two host cedar and apple to complete its life cycle. cedar apple rust does not effect other hardwood trees. I do not think the cedar is causing the problems with the hardwoods. cedar will grow naturally on poorer type soil and shallow soil--these soils are subject to droughts and if hardwoods are growing on these type soils they will be damaged by droughts.
If you are in the US I would suggest you contact the State Forestry agency and ask one of their Foresters to come take a look. This is a free service and they should be able to advise you on any problems with the hardwoods.