All of my red pines are dying off. Needles turn brown spreading through...
All of my red pines are dying off. Needles turn brown spreading through entire tree. I have seen a lot of this in the area. Trees are 50 years old. Could it be pine borer? any cure?
Washington County Minnesota
There are several possible culprits among both disease and pests, but also environmental stress from the previous drought, so its impossible to diagnose from your description alone and without detailed photos or samples.
Your best option is to make an appointment for a site visit by a certified arborist, a University of Mn Extension Tree Care Advisor or a county extension agent. Here's a link that might help :
Here is also a link to some info on recent pests and disease issues withe red pine:
Some additional resources:
How to hire a professional arborist to help care for your landscape trees
Staff at the Minnesota Department of Natural Resources Forestry Division may also be able to assist you. tel. 651-259-5830