Dawn redwood, juglone intolerant?
My DR has been in the ground for at least 3 years and is about 15-20ft. In the last few weeks it has almost completely died. Check out proximity to neighbors black walnut in pic (first really tall tree to right, on either side are holly and a dogwood) In the walnut's defense it has been very hot and dry. This tree is more sensitive than I thought! Anyone else had one dry out so quickly? Or suspected black walnut was to blame for dieback?