I have these trees (well over 15 years). I am not sure the identification of these trees but I am guessing that they are cedar. They are evergreen and do not produce any cones. Confirmation as to ID and species would be much appreciated . Of concern, these trees had started developing "cracks" and "splits" starting at the base of the tree ~ 3 years ago. Would appreciate any advice as to treatment or management of this issue and the diagnosis of this "cracking" or "splitting". Have attached photos for ID purposes and the "cracks" . Thank you kindly.