Assuming it was OK for the first 39 years, can you think of anything that changed in its environment or treatment last year or earlier this year? What about animals peeing on it, could that be a new thing? Last winter was a nasty one in the NE but probably nothing a plant that old hadn't experienced before. Is there anything in this document that resembles what you have seen with it over this year?:
http://cru.cahe.wsu.edu/CEPubl...
Cross posted with you Keith. Unless the soil pH suddenly changed for some reason I would have expected there to have been some sign of chlorosis before its 40th year.
