Canker Diseases - Conifers
Leucocytospora Canker of Spruce
Leucocytospora canker can kill branches throughout the tree but does not move into the main trunk.
Branch cankers on stems of blue spruce caused by Leucocytospora kunzei.
Wounds on blue spruce branches. Sometimes you see wounds on spruce due to lawn moving or other mechanical damage. These have different characteristics than cankers.
Pitch Canker on Southern Yellow Pine
Main stem canker caused by Fusarium circinatum. Lots of pitch flows out of the cankered area.
Pitch canker on branches. Resin flows from the canker and sporodochia form on the cankered area (not visible in this photo with all the pitch).