Samples with the following problems have come into the Plant Disease Clinic recently:

• Black root rot on greenhouse plants
• Cercospora needle blight on juniper
• Diplodia tip blight on Jack pine
• Pine bark adelgids on white pine
• Rhizosphaera needle cast on spruce
• Spider mite injury on spruce
• Sooty mold on white pine

A white pine sample with sooty mold fungus on the stem and needles.