Hello fellow gardeners, wondering what might be causing my 3 year old blue spruces to get all sorts of dead needles. I have 2 and they are not close to each other and they both have the same issue. Some full branches are dead and some only in the middle with new growth coming through. This started in the mid spring, I have checked other posts and sounds like horticultural oil or daconil should be used. Any advice to help save these trees would be greatly appreciated. Geoff