University of Maryland Plant Diagnostic Web Site - Organized by symptoms for trees, shrubs, houseplants, herbaceous perennials, vegetables, lawns and more. Guided and accented with photos for ease of diagnosis of common diseases, insects and environmental stresses. Suggests IPM methods.
Readers Digest Garden Problem Solver - Arranged by symptoms for trees, shrubs, herbaceous plants, vegetables, lawns, fruits and nuts. Helpful troubleshooting tool, but not a substitute for seeking local advice as all solutions may not be appropriate for New York gardeners. Suggests IPM methods.
Berry Diagnostic Tool - Problem solver for small fruit including strawberries, raspberries, grapes, blueberries, blackberries, currants and gooseberries. Designed for commercial growers, but also useful for home garden diagnostics. Does not include pesticide recommendations as they vary from state to state. Suggests IPM methods. Joint effort from Cornell, North Carolina State University and Oregon State University.
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