The Plant Disease Clinic received samples with the following problems last week:

• Anthracnose on ash, maple, and white oak
• Ash/lilac borer on ash
• Ash rust
• Black rot and phylloxera galls on grape
• Clematis wilt
• Drought stress on many plants
• Herbicide injury on various plants
• Mite injury on spruce
• Plum pockets
• Squirrel damage on oak
• Verticillium wilt on catalpa
• White mold on tomato