Mature White Pine died
My neighbor and I have a row of white pines that are 21 years old on the lot line between our houses. I notice that one of the mature pines has died. There is a pile of wood shavings at the bottom of the tree trunk. As I look up the trunk of the tree, I an see there are wood shavings on upper branches. So, I am not sure what has killed the tree. Was it bugs and now the shavings are from woodpeckers. Did it die of some other cause which allowed in bugs like ants. Should I cut the tree down. Do I have to worry about the other trees.
Anoka County Minnesota
I cannot diagnose the problem from the pictures. You may want to have an onsite consultation with an arborist since you have many trees. Here is a link on how to hire an arborist. See: http://www.extension.umn.edu/garden/yard-garden/trees-shrubs/how-to-hire-a-professional-arborist/ Also see: http://www.treesaregood.org/ In the mean time here are links to common white pine diseases. Most likely the tree died and was then invaded by insects and woodpeckers followed. You can check the signs in the articles below with what you are seeing on your tree. 1. https://www.extension.umn.edu/garden/yard-garden/trees-shrubs/white-pine-blister-rust/ 2. https://www.na.fs.fed.us/spfo/pubs/howtos/ht_white/white.htm 3. http://hyg.ipm.illinois.edu/pastpest/200613a.html 4. http://www.missouribotanicalgarden.org/gardens-gardening/your-garden/help-for-the-home-gardener/advice-tips-resources/pests-and-problems/environmental/decline.aspx