Help with Hemlock tree

Question

I have a beautiful very large Hemlock tree in my garden and this year the needles have been turning yellow. I don’t see any insects on it and I hate to cut it down.
Is this something you can help me with?? Thank you in advance.

Answer 1

Your zone is 5b. This article discusses one of the typical problems for hemlocks. https://www.gardeningknowhow.com/ornamental/trees/hemlock/growing-hemlock-trees.htm
Another suggestion is to contact your local agricultural extension agent to discuss the possible problems with this tree: Here's a link for your nearest extension service:
https://www.gardeningknowhow.com/extension-search?zip=19720&radius=50&services_search_action=search&submit=Search