Some of us are starting to notice yellow-orange spots on the leaves of their ornamental or fruiting pear trees. These spots begin in the late spring on the upper surface of leaves, approximately 1/8 ...

During the summer, many of us notice yellow-orange spots on the leaves of their ornamental pear trees. These spots begin in the late spring on the upper surface of leaves, approximately 1/8- to ...

Alias: The pear leaf blister mite, or pear rust mite. This is such a small pest that it is almost pointless to describe the physical characteristics. It is a small (too small to see with the naked eye ...

Fall is here and all of those end-of-season projects are looming. If you’ve got questions, turn to Ask an Expert, an online question-and-answer tool from Oregon State University’s Extension Service.