Douglas fir foliage turning brown

Asked November 12, 2020, 11:47 AM EST

The foliage on the fir trees behind our house are turning brown. Any suggestions on causes or treatment? Or is this normal?
A neighboring tree in one of the pictures has severe lichen. And there is lichen in some of the fir trees. Is this related at all to the foliage turning brown on the firs?

King County Washington

1 Response

Thank you for your question. The assigned expert has been unavailable, and Ask an Expert will be terminated at the end of the month. I suggest you contact your own county Extension service directly for help: Good luck!