Dear David and Kay,

This is Rhizosphaera Needecast. It is a fungus and I have been battling it myself for a decade in my landscape. It is caused by the fungus Rhizosphaera kalkhoffi. Starts in the lower branches and progresses up the tree. 

Research has shown that the fungicide containing chlorothalonil has been effective in controlling the disease. Properly timed applications are the key. Two applications for two to three consecutive years. The first after bud break and the second three to four weeks after the first.

Avoid pruning during wet periods. Remove the fallen needles and the lower branches that are touching the ground. Trim some areas in the trees to allow good air circulation and always sterilize your equipment.

Go to: https://u.osu.edu/ornamentaldiseasefacts/nursery/rhizosphaera-needle-cast/what-is-it-what-to-do-about-it and https://ohioline.osu.edu  and search for HYG-3059-96 Titled  "Rhizophaera Needlecast on Spruce". Both these sources can better inform you of the disease.

Personally I am still loosing two blue spruce trees but one dwarf blue spruce shrub is doing great!

You may also want to contact the Union County OSU Extension Office for more assistance. They are located at 18000 OH-4, Marysville, Ohio 43040.<personal data hidden>

Sincerely,

Mike Heys, Franklin County Master Gardener