Last Saturday (2-14-2009), we attended the Be Your Own Plant Doctor course at Boerner Botanical Garden.
It was interesting and informative.
We all had fun investigating a sample of Black Knot fungus that I brought in for show and tell.
There were four web sites that got special mention:
Virginia Tech Dendrology
http://www.cnr.vt.edu/DENDRO/DENDROLOGY/main.htm
University of Minnesota Plant Disease Diagnostics
http://www.extension.umn.edu/projects/yardandgarden/diagnostics/
University of Maryland Plant Diagnostics
http://plantdiagnostics.umd.edu/
Cornell Vegetable MD Online
http://vegetablemdonline.ppath.cornell.edu/
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