I am attempting to help a local resident determine the cause and treatment of a white pine problem.
The pines were planted about 20-25 years ago in a grove on 16' centers as part of an agricultural subsidy program. There are several hundred trees.
For the past year trees have been dying suddenly and randomly. While the trees may be stressed from being planted so tightly, the randomness of which trees are effected seems to suggest a pest. The owner has removed about thirty trees so far, and yet the problem continues to persist.
Any information you can provide regarding pests or experts to contact is appreciated. thank you