Disease Fact Sheets from Penn State
Blue and Norway spruces are susceptible to this branch-killing disease.
includes information on the following diseases: Rhabdocline needlecast, swiss needlecast and twig blight
Affects douglas fir, spruce and pine. Includes Rhabdocline and swiss needlecasts (firs), Ploioderm, Lophodermium and Cyclaneusma needlecasts (pines), redband and brown spot pine needle blights and Rhizosphaera needlecast on spruce.
attacks woody ornamentals including fraser fir, hemlock and white pine
Includes Cyclaneusma needlecast, Spaeropsis tip blight, Ploioderm needlecast, Lophodermium needlcast, Needle rust, Pine-pine gal rust, Pine-oak gall rust, root rot and white pine blister rust
pine disease. Plant attacked in the spring and cankers form
Includes Cytospora canker, Rhizosphaera needlecast, and needle rust
