The hated Tasmanian blue gum tree - better known as a variety of ... which was infected with pine pitch canker almost a decade ago. Ehrlich's staff, with help from the UC Davis department of ...

Cytospora canker is a fungus that primarily attacks blue and Norway spruce, although Siberian and white spruce may be attacked as well.Cytospora is a stress-induced disease, meaning that it only ...

They’re planted on a hill in clay soil. Cytospora canker disease is extremely common on blue spruce. This fungus targets blue spruce stressed by drought or poor site conditions. Spores invade ...

Your description suggests that your Colorado blue spruce (Picea pungens ‘Glauca’) is suffering from cytospora canker, a disease caused by a fungus that attacks spruces, hemlocks, firs and larches.