I live in N Idaho and have a large cottonwood tree (5ft dia - approx 100' height) in my yard. This summer it has lost 3 large limbs (6-9" dia. at break-off) from half way to 2/3 up the tree. There are some dead branches in the canopy but these lost limbs were green with no sign of despair (at least to this homeowner). They all fell in calm weather. It gets watered with the lawn. Any ideas as to the trees viabilty and or things to look for to anticipate its demise?
Thanks
Thanks