Master Gardener Training Classes are taught by OSU faculty, extension agents and horticultural specialists. Classes include basic botany and plant pathology; pest identification and control methods; soil management and plant nutrition; and diagnosis and control of plant problems. Other general interest classes on such topics as pruning, composting, propagation, greenhouses, berries, houseplants, vegetables, fruit trees, and gardening for pollinators may be included depending on class interest. The actual course content and sequence will vary from year to year and will depend on local needs and interests. Classes are held during the winter months of January through March.