Hemlock in Distress! Please help!
Hi all. We planted a mature Hemlock (approx 7 feet tall) late summer last year. It was very full and green. However I have noticed a remarkable decline in it's appearance over the fall and winter months. It stated as some browning and dropped needles in spots but currently has spread to most of the tree. I would say that a good 1/3 of the needles are browning and falling off. An arborist was out to inspect it a month ago and saw no signs of bugs and insisted that these trees will shed needles and that it looked fine but it seems to have gotten worse not better.
We have had a lot of snow and runoff in our backyard so the ground has been very wet for a long time. I'm not sure how much water these trees can take at a time. What are the symptoms of drowning?
I know this is a general post at this point but I am looking for general advice at this point. I can give a more detailed response to questions and even post pictures if that helps. What should I be looking for that is normal behavior and what should I be worried about?