Only 2 of 5 pictures sent came through 

Hello, 

From the two pictures, it is hard to determine the cause of this problem.  Is the entire tree defoliated or just lower branches?  There are several insects that can cause needle defoliation (bagworm, spongy moth, spruce budworm).  Some more information (tree species) and further pictures may be helpful in narrowing down potential cause. 

Yes all needles have fallen off the tree and not just the bottom. Cannot say for sure where they started falling from, but I would say originally the lower third of the tree. I will try to send more photos and not sure why they didn’t go through. Look forward to hearing from you again. If we wanted to replace the tree, would we or should we go with the same type of tree or try another Evergreen? I’m only able to send 3 photos

Needles first started falling from above the bottom third of the tree and worked their way up to the top. All needles have fallen from the tree. We would like to replace a tree in that same area, should we go with the same type of tree or a different Evergreen? We do have lots of blue spruce on the property also And concerned about their health in the future. What do we need to do to make sure this does not happen to others? 

From the information at hand, it is very difficult to determine what caused current tree problems.  It may be worth sending a sample to the MSU plant/pest diagnostic lab (Plant & Pest Diagnostics (msu.edu) ) for further testing.  This would allow better planning if other trees on your property need protecting. 

Colorado blue spruce can be a nice tree, but is subject to many needlecast diseases here in Michigan.  Other conifers you may consider planting are outlined in this bulletin: Alternatives to Blue Spruce: Top Conifers for Michigan Landscapes - Landscaping (msu.edu).  Norway spruce is very resistance to needlecast diseases.