Q.deodar root system
100 year old Deodar tree maybe in danger. My neighbor is planning on putting up a cement block wall between our properties that will be about
10 feet away from the trunk of my 100 year old deodar tree. What do I need to worry about?
He is planning on trenching down 12 inches and doing the work in January or February. should I
move the date to keep form shocking the tree?
thanks for any help you can give me.

Certified GKH Gardening Expert
Unfortunately, if the roots reside on his side of the property then he can do this. The good news is that if this is done during dormancy, or in the cold it has a better chance of taking the damage. I would see if you can talk to the neighbor and work out being able to do this in the cold weather. Otherwise, I think that the tree will be able to handle some degree of root damage.