My 50 foot tall blue spruce trees are dying-what can I do?

Something is killing my trees.Any ideas? Im in Massachusetts

Think Different2010-02-06T22:12:43Z

Favorite Answer

Take a sample to your local Extension Service and ask for help. Other sources are local nurseries or tree farms. You don't give enough info to make a evaluation.
edit: If you can also take a few pictures showing the trees full view and close up.