Lethal Yellowing (LY)

Field diagnosis is based on a series of symptoms. No single symptom is diagnostic of lethal yellowing. Rather, it is the appearance and chronological progression of symptoms that accurately identifies the disease...

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Nitrogen Deficiency

Nitrogen deficiency begins as a uniform light green discoloration of the oldest leaves. The golden-yellow color of the crownshaft, petiole and rachis in Dypsis lutescens is caused by nitrogen deficiency...

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Foliar Spray Toxicity

Foliar spray injury appears as desiccation of the foliage that is contacted by the chemical or salt spray. Necrotic spotting and extensive leaflet tip necrosis are typical symptoms...

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About This Tool

The pages of this tool offer a variety of resources to aid the user in the diagnosis of palm diseases and disorders.

What's Covered

This tool includes diseases and disorders that may affect palms grown in the U.S. and the Caribbean.

Palm Resource

Learn more about the commodity-based resource A Resource for Pests and Diseases of Cultivated Palms.

Last Updated October 2014