Here are websites that provide photos and articles to help you diagnose common pests and diseases for orchids. If you have other sites you have found helpful, please send the link and we will include it here.
- http://www.ppdl.purdue.edu/PPDL/
Plant and Pest Diagnostic Laboratory (P&PDL) at Purdue University provides rapid and accurate identification of pests. Photos and information.
- http://plantdiagnostics.umd.edu/
University of Maryland, Home and Garden Information Center's Plant Diagnostic Web Site
Not specific to orchids, but a wealth of information and photos.
- http://www.merrifieldgardencenter.com/v.php?pg=56
Merrifield Garden Center Plant Clinic
Information about bringing your plants in to a garden center near you for help diagnosing and treating the problem.
- http://nathist.sdstate.edu/orchids/pests/scales.htm
Scale Insects on Orchids
Paul J. Johnson, Ph.D.
Insect Research Collection
Very detailed information with photos.
- http://nathist.sdstate.edu/orchids/Pests/mites.htm
Mites on Cultivated Orchids
Paul J. Johnson, Ph.D.
Insect Research Collection
- http://www.orchid.org.uk/orchidproblems.htm
Orchid Pests and Problems - The North of England Orchid Society
Information not nessecarily specific to England, plus photos of pests.
- http://www.dreamorchids.com/Orchid-Pests.html
Orchid Pests - Learn what to look for and how to treat common orchid pests.
General information, but no photos.
- http://www.ionopsis.com/Pests_and_Diseases.htm
Pests and Diseases on orchids-bacteria, fungi, slu.gs, snails, pesticides, viruses and insects. Information and photos
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