Plant Industry Division

The coffee leaf rust (CLR) is one of the most damaging diseases of coffee plants. It was first detected in Hawaii in October 2020 and has since been found on Maui, Hawaii Island, Oahu and Lanai.

Since its detection in Hawaii, there has been a multi-agency effort to assist the state’s $56 million industry manage this plant pathogen and minimize its damage and spread. The agencies involved include the Hawaii Department of Agriculture (HDOA), the University of Hawaii – College of Tropical Agriculture and Human Resources (UH-CTAHR), the U.S. Department of Agriculture’s Daniel K. Inouye Pacific Basin Agricultural Research Center, and also the Hawaii coffee industry.

What’s New

• May 18, 2022
  EPA Approves the Renewal for the Emergency Exemption allowing Hawai`i coffee growers to use a fungicide to control coffee leaf rust until May 19, 2023.
• FAQs on the use of the fungicide, Priaxor® Xemium
• Priaxor® Xemium Sec. 18 label for use on coffee plants
• Webinar on the use of Priaxor® Xemium on coffee plants