APHIS Establishes a Citrus Greening (Huanglongbing) Quarantined Area in Arizona

Print

FOR INFORMATION AND ACTION
DA-2026-06
February 10, 2026

Subject: APHIS Establishes a Citrus Greening (Huanglongbing) Quarantined Area in Arizona

To: State, Tribal, and Territory Agricultural Regulatory Officials 

Effective immediately, the USDA's Animal and Plant Health Inspection Service (APHIS), in cooperation with the Arizona Department of Agriculture (AZDA), is establishing an area quarantined for citrus greening (Huanglongbing; HLB), caused by Candidatus Liberibacter asiaticus, in Arizona. APHIS is establishing the quarantined area in the Nogales area of Santa Cruz County of approximately nine square miles. These measures parallel the intrastate quarantine that AZDA established on February 7, 2025. APHIS is taking this action because of confirmed citrus greening detections in plant tissue samples collected from residential properties in Santa Cruz County. This is the first confirmation of citrus greening in plant tissue in Arizona. There is no commercial citrus impacted by this quarantine.

APHIS is applying safeguarding measures outlined in 7 CFR 301.76 and Federal Orders on the interstate movement of regulated articles from the quarantined areas in Arizona. This action is necessary to prevent the spread of citrus greening to non-infested areas of the United States.

The APHIS Citrus Greening website contains specific changes to the quarantined areas in Arizona. APHIS will publish a notice of this change in the Federal Register.

For additional information, you may contact: 

Abby R. Stilwell 
Agriculturist 
919-323-6296 
abby.r.stilwell@usda.gov

/s/

Matthew A. Rhoads 
Acting Deputy Administrator 
Plant Protection and Quarantine