Green Needles dropping from I believe Spruce Tree
Green needles are dropping from the lower third of the tree, which is becoming denuded. I believe it is a spruce tree and probably 50 years old. The top third of the tree looks good. Trunk shows white discharge. The first photo shows the bottom lowest branches; the second photo shows the top of the tree, and the third photo, the trunk. Thank you for your help.
Your photos were out of focus. This looks like a spruce possibly a Norway spruce. This does not look like a disease but looks like a type of stress. The thinning of the branches and needles is also the way the tree matures. We do not see a decline in the top portion. The white on the trunk looks like sap but we cannot say what caused it possibly a wound, borers, etc.
At this point, we recommend that you water the tree during dry periods up until the ground freezes. Prune dead branches only. Make sure mulch is no thicker than several inches and away from the trunk. No other control is recommended.