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There is also a tremendous amount of information of physiological problems, which may arise from incorrect watering, light conditions, potting media, the presence of weeks, nutritional problems, even air pollution.
Viruses are examined in depth, complete with information on how they spread amoung orchids, and details for testing plants for their presence. Eight experts share their hands-on advice, offering both chemical and organic controls for use in greenhouses, outdoors and on the windowsill. A glossary and list of places where contaminated orchids can be sent for analysis round out this popular reference, which is profusely illustrated with color and black-and-white photographs to aid recognition.
Orchid Pests and Diseases is part of the American Orchid Society Guide series, which also includes Growing Orchids, Growing Orchids Under Lights, Orchid Photography and Your First Orchid.
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