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Updated: August 8, 2017
In diagnosing problems of plants from the production area, the retail area, the landscape, or home, all the possible causes of poor or abnormal growth must be considered.The following key lists some but certainly not all of the possible causes of plant ill health. Your interrogation of the person growing the plant or a review of the history of the plant should eliminate some of the causes listed while close examination of the plant should eliminate others. Use this key as a guide and add to it as your experience increases.
Similar keys are available from the following sources:
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