The entire row is dying
Hello, and thanks for using the Ask an Expert System,
I believe that all the trees on the right side of the photo are dead. I do not believe that you can do anything to save them. Have you contacted the nursery where you bought the trees or the service who planted them? Was there a warranty on these trees?
I suggest that you look carefully at the roots of one or two of these trees. I suspect the problem was improper planting. However, I would need to know when they were planted and if there are any signs of failure to remove root wrapping materials or any signs of planting too deeply.
I suggest that you contact the Armstrong County Penn State Master Gardener Hotline for assistance. This gardening hotline is a free service offered through the Penn State Extension office to help Armstrong County residents with gardening questions and concerns.
Thanks. The trees are 7 years old. There are 100 of them. The death started on one and traveled to the left.