Huanglongbing (HLB)
Regulation and Quarantine Bounderies
Pest Hotline: 1-800-491-1899
The plant disease known as Huanglongbing (HLB) is believed to be caused by a phloem-restricted bacterium which is vectored by the Asian Citrus Psyllid (ACP).
Quarantine Information
Quarantine Map Overview
Options available for viewing the quarantine boundary maps:
- State Overview : For reference Only
- State Overview Map with Grids and Links : Map containing grid numbers linking to specific areas in California.
- Active Quarantines Web Application (09/17/20)
- HLB Overall Quarantine Boundary Layer (09/17/20)
- Boundary Maps: "MAPS" section below. Click on a grid number to open map to specific area in California.
- Quarantine Update Notification Log
| Grid #439 | New Grid #440 |
New Grid #441 |
Grid #456 | New Grid #457 |
New Grid #458 |
| Grid #459 | Grid #470 | Grid #471 | Grid #472 | Grid #482 | |
| Grid #483 |
