Green Giant arborvitae dying; suggestions?
Steve is out of the Mat Su office for a few weeks, I am not sure my arborvitae have a few weeks to hang on (the ones that might survive). Does anybody have any suggestions as to what might be happening. The row on the left are Green Giant arborvitae. The row on the right are a smaller variety. Both were planted in 2016 and have done ok. This year they are dying. The Green Giants are hardest hit. I do not see any infestations. The soil is not waterlogged (and on a slope). I am outside of Palmer. Previously BIrch and wild rose grew here. This was tilled and new topsoil etc. I have additional photos.
Matanuska-Susitna Borough Alaska