These categories are specific for Nursery grown plants. This would include field or container grown plants.
A completed Plant Diagnostic Request Form is required for all submissions.
Always use these general guidelines for submitting a greenhouse sample.
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Samples should be fresh.
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Samples should represent the early to middle stages of the problem. A completely dead and decaying sample cannot be reliably diagnosed.
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Samples should be carefully packaged and shipped early in the week to avoid weekend layovers during which the sample will deteriorate.
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Be sure to include sample documentation and background information on the Plant Diagnostic Request Form.
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Pictures of the problem in the field are always helpful. The environmental conditions of the plant can play an important role in the diagnosis.