Sweet Orange Scab (SOS)
Regulation and Quarantine Boundaries
Pest Hotline: 1-800-491-1899 The plant disease known as Sweet Orange Scab (SOS) is believed to be caused by the fungal pathogen Elsinöe australis, which results in the formation of pustules (small raised spots or rounded swelling) and lesions on the skin or rind of citrus fruit.
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 (05/29/2024)
- SOS Overall Quarantine Boundary Layer (05/29/2024)
- Boundary Maps: Maps section below. Click on a grid number to open map to specific area in California.
| Grid #439 | .Grid #456 | Grid #457 | New Grid #458 |
Grid #470 | Grid #471 |
New Grid #472 |
Grid #479 | Grid #483 | Grid #491 | Grid #504 | Grid #505 |
| Grid #515 | Grid #516 | Grid #528 | Grid #529 |
Sign Up for Updates
Hot Topics
- What to Expect in Response to a Confirmed Asian Citrus Psyllid Detection
- English | Spanish | Chinese | Vietnamese
- What to Expect in Response to a Confirmed Positive Huanglongbing Detection
- English | Spanish | Chinese | Vietnamese
- Health Questions and Answers - CoreTect®
- English | Spanish
- Health Questions and Answers - Merit®2F
- English | Spanish | Chinese | Vietnamese
- Health Questions and Answers - Tempo®SC Ultra
- English | Spanish | Chinese | Vietnamese
ACP/HLB
Resources
Interactive Website for Asian Citrus Psyllid Management (for Growers and Homeowners)UCANR
Asian Citrus Psyllid: Provisional Treatment Guidelines for Citrus in Quarantine Areas UC IPM Online
CA Citrus Pest and Disease Prevention Committee (CPDPC)
County Agriculture Departments
Invasive Pests and Diseases
HLB Online Resources USDA
PEST FACT SHEETS:
CDFA Entomology Lab Plant Pest Information USDA/APHIS Save Our Citrus USDA
CDFA Entomology Lab Plant Pest Information USDA/APHIS Save Our Citrus USDA