Our two Alberta Spruce trees had orange needles on the south side this year. We thought it might be sunburn (if that's possible), but on closer inspection, we found small black shiny nodules on the crooks of the branches inside. The nodules fell off when poked, but one tree has had significant needle drop and bare branches on the bottom. The orange needles have dropped or the color is more green now and the trees have new growth starting. Have you any idea what this might be and a cure for it?
