In many parts of the United States, plants are packing it in for winter, but the plant disease diagnostic clinic at Cornell University can still provide some answers to houseplant and greenhouse questions. Bookmark the site for when the growing season brings all sorts of plant troubles. The Clinic works closely with the "Cornell Cooperative Extension" county offices. The range of plants they can offer diagnostic services for is wide, including "Field Crops", "Fruits", "Turf", and "Annuals & Herbaceous Perennials". The other categories they address are on the left hand side of the menu. Samples of diseased plants can be mailed in or brought in, and examined for a fee. Instructions on proper care and packaging of the sample, as well as fees charged for the different types of samples, can be found in the links, "Fees" and "Sample Submission", at the bottom of the page. Visitors should not miss the glossary of "Plant Pathological Terms" that can be located in a link at the bottom of the page. The glossary includes audio pronunciations of the words, and some are even accompanied by photos or drawings of the concept.