Asian Citrus Psyllid / Huanglongbing
Notice of Treatment and Proclamation of an Emergency Program
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).
Alameda County
Notice of Treatment (NOT)
None at this time.
Proclamation of an Emergency Program (PEP)
None at this time.
Contra Costa County
Notice of Treatment (NOT)
None at this time.
Proclamation of an Emergency Program (PEP)
None at this time.
Fresno County
Notice of Treatment (NOT)
None at this time.
Proclamation of an Emergency Program (PEP)
PEP (ACP): Fresno, Fresno County 2025-02 – October 27, 2025
Map Only: Fresno, Fresno County 2025-02 – October 27, 2025
PEP (ACP): Fresno, Fresno County 2025-01 – October 7, 2025
Map Only: Fresno, Fresno County 2025-01 – October 7, 2025
Imperial County
Notice of Treatment (NOT)
None at this time.
Proclamation of an Emergency Program (PEP)
PEP (ACP/HLB): Calexico, El Centro, Heber, Imperial County 2026-01 – September 14, 2026
Map Only: Calexico, El Centro, Heber, Imperial County 2026-01 – September 14, 2026
Treatment Area 1 – September 14, 2026
PEP (ACP): Imperial, Imperial County 2025-01 – December 18, 2025
Map Only: Imperial, Imperial County 2025-01 – December 18, 2025
Kern County
Notice of Treatment (NOT)
None at this time.
Proclamation of an Emergency Program (PEP)
PEP (ACP): Arvin and Bakersfield, Kern County 2025-05 – December 10, 2025
Map Only: Arvin and Bakersfield, Kern County 2025-05 – December 10, 2025
PEP (ACP): Bakersfield and Mettler, Kern County 2025-04 – December 8, 2025
Map Only: Bakersfield and Mettler, Kern County 2025-04 – December 8, 2025
PEP (ACP): Bakersfield and Mettler, Kern County 2025-03 – November 26, 2025
Map Only: Bakersfield and Mettler, Kern County 2025-03 – November 26, 2025
PEP (ACP): Bakersfield and Oildale, Kern County 2025-02 – November 21, 2025
Map Only: Bakersfield and Oildale, Kern County 2025-02 – November 21, 2025
PEP (ACP): McKittrick, Kern County 2025-01 – October 27, 2025
Map Only: McKittrick, Kern County 2025-01 – October 27, 2025
PEP (ACP): Bakersfield, Kern County 2024-03 – December 2, 2024
Map Only: Bakersfield, Kern County 2024-03 – December 2, 2024
PEP (ACP): Bakersfield, Maricopa, Oildale, Kern County 2024-02 – November 15, 2024
Map Only: Bakersfield, Maricopa, Oildale, Kern County 2024-02 – November 15, 2024
Kings County
Notice of Treatment (NOT)
None at this time.
Proclamation of an Emergency Program (PEP)
None at this time.
Los Angeles County
Notice of Treatment (NOT)
None at this time.
Proclamation of an Emergency Program (PEP)
PEP (ACP/HLB): Los Angeles County 2025-01 – November 25, 2025
Map Only: Los Angeles County Emergency Program Area 2025-01 – November 25, 2025
Treatment Area 1 – November 25, 2025
Treatment Area 2 – December 10, 2025
Treatment Area 3 – January 9, 2026
Treatment Area 4 – February 6, 2026
Treatment Area 5 – March 5, 2026
Treatment Area 6 – April 28, 2026
Treatment Area 7 - May 13, 2026
Treatment Area 8 - July 8, 2026
Treatment Area 9 - August 24, 2026
PEP (ACP/HLB): Los Angeles County 2024-03 – September 13, 2024
Map Only: Los Angeles County Emergency Program Area 2024-03 – September 13, 2024
Treatment Area 1 – September 16, 2024
Treatment Area 2 – October 29, 2024
Treatment Area 3 – November 12, 2024
Treatment Area 4 – December 6, 2024
Treatment Area 5 – December 19, 2024
Treatment Area 6 – January 15, 2025
Treatment Area 7 – February 19, 2025
Treatment Area 8 – March 19, 2025
Treatment Area 9 – April 18, 2025
Treatment Area 10 – May 8, 2025
Treatment Area 11 – September 25, 2025
PEP (ACP/HLB): Los Angeles County 2024-02 – July 31, 2024
Map Only: Los Angeles County Emergency Program Area 2024-02 – July 31, 2024
PEP (ACP/HLB): Los Angeles County 2024-01 – January 30, 2024
Map Only: Los Angeles County Emergency Program Area 2024-01 – January 30, 2024
Treatment Area 1 – February 27, 2024
Treatment Area 2 – February 27, 2024
Treatment Area 3 – February 27, 2024
Treatment Area 4 – March 28, 2024
Treatment Area 5 – April 17, 2024
Treatment Area 6 – May 16, 2024
Treatment Area 7 – June 19, 2024
Treatment Area 8 - July 15, 2024
Madera County
Notice of Treatment (NOT)
None at this time.
Proclamation of an Emergency Program (PEP)
PEP (ACP): Madera, Madera County 2025-03 – December 18, 2025
Map Only: Madera, Madera County 2025-03 – December 18, 2025
PEP (ACP): Madera, Madera County 2025-02 – December 10, 2025
Map Only: Madera, Madera County 2025-02 – December 10, 2025
PEP (ACP): Madera, Madera County 2025-01 – December 8, 2025
Map Only: Madera, Madera County 2025-01 – December 8, 2025
Marin County
Notice of Treatment (NOT)
None at this time.
Proclamation of an Emergency Program (PEP)
None at this time.
Monterey County
Notice of Treatment (NOT)
None at this time.
Proclamation of an Emergency Program (PEP)
PEP (ACP): Gonzales, Monterey County 2025-01 – July 24, 2025
Map Only: Gonzales, Monterey County 2025-01 – July 24, 2025
Orange County
Notice of Treatment (NOT)
None at this time.
Proclamation of an Emergency Program (PEP)
PEP (ACP/HLB): Orange County 2025-07 – December 30, 2025
Map Only: Orange County Emergency Program Area 2025-07 – December 30, 2025
Treatment Area 1 – December 30, 2025
Treatment Area 2 – January 14, 2026
Treatment Area 3 – February 6, 2026
Treatment Area 4 – March 10, 2026
Treatment Area 5 – April 28, 2026
Treatment Area 6 – May 14, 2026
Treatment Area 7 – June 19, 2026
Treatment Area 8 – July 23, 2026
Treatment Area 9 – August 24, 2026
PEP (ACP/HLB): Orange County 2025-06 – November 12, 2025
MAPs Only: Orange County Emergency Program Area 2025-06 – November 12, 2025
Treatment Area 1 – November 12, 2025
Treatment Area 2 – November 25, 2025
Treatment Area 3 – December 10, 2025
PEP (ACP/HLB): Orange County 2025-05 – October 1, 2025
MAPs Only: Orange County Emergency Program Area 2025-05-Map01 – October 1, 2025
Treatment Area 1 – October 1, 2025
Treatment Area 2 – October 28, 2025
PEP (ACP/HLB): Orange County 2025-04 – September 5, 2025
MAPs Only: Orange County Emergency Program Area 2025-04 – September 5, 2025
Treatment Area 1 – September 5, 2025
Treatment Area 2 – September 16, 2025
Treatment Area 3 – September 17, 2025
PEP (ACP/HLB): Orange County 2025-03 – July 3, 2025
MAPs Only: Orange County Emergency Program Area 2025-03 – July 3, 2025
Treatment Area 1 – July 3, 2025
Treatment Area 2 – August 13, 2025
PEP (ACP/HLB): Orange County 2025-02 – April 28, 2025
MAPs Only: Orange County Emergency Program Area 2025-02 – April 28, 2025
Treatment Area 1 – April 29, 2025
Treatment Area 2 – May 8, 2025
PEP (ACP/HLB): Orange County 2025-01 – February 21, 2025
MAPs Only: Orange County Emergency Program Area 2025-01 – February 21, 2025
Treatment Area 1 – February 25, 2025
Treatment Area 2 – March 25, 2025
PEP (ACP/HLB): Orange County 2024-04 – December 24, 2024
Map Only: Orange County Emergency Program Area 2024-04 – December 24, 2024
Treatment Area 1 – December 26, 2024
Treatment Area 2 – January 22, 2025
PEP (ACP/HLB): Orange County 2024-03 – November 18, 2024
Map Only: Orange County Emergency Program Area 2024-03 – November 18, 2024
Treatment Area 1 – November 18, 2024
PEP (ACP/HLB): Orange County 2024-02 – August 23, 2024
Map Only: Orange County Emergency Program Area 2024-02 – August 23, 2024
Treatment Area 1 – August 23, 2024
Treatment Area 2 – September 30, 2024
Treatment Area 3 – October 23, 2024
PEP (ACP/HLB): Orange County 2024-01 – February 12, 2024
Map Only: Orange County Emergency Program Area 2024-01 – February 12, 2024
Treatment Area 1 – February 26, 2024
Treatment Area 2 – February 26, 2024
Treatment Area 3 – February 26, 2024
Treatment Area 4 – February 26, 2024
Treatment Area 5 – March 28, 2024
Treatment Area 6 – April 17, 2024
Treatment Area 7 - May 17, 2024
Treatment Area 8 - June 19, 2024
Treatment Area 9 - July 24, 2024
Riverside County
Notice of Treatment (NOT)
None at this time.
Proclamation of an Emergency Program (PEP)
PEP (ACP/HLB): Riverside County 2026-01 – April 10, 2026
Map Only: Riverside County Emergency Program Area 2026-01 – April 10, 2026
Treatment Area 1 – April 10, 2026
Treatment Area 2 – April 21, 2026
Treatment Area 3 – May 13, 2026
Treatment Area 4 – June 19, 2026
Treatment Area 5 – August 5, 2026
Treatment Area 6 – August 24, 2026
PEP (ACP/HLB): Riverside County 2025-06 – December 23, 2025
Map Only: Riverside County Emergency Program Area 2025-06 – December 23, 2025
Treatment Area 1 – December 23, 2025
Treatment Area 2 – January 26, 2026
Treatment Area 3 – February 12, 2026
Treatment Area 4 – March 10, 2026
PEP (ACP/HLB): Riverside County 2025-05 – November 4, 2025
Map Only: Riverside County Emergency Program Area 2025-05 – November 4, 2025
Treatment Area 1 – November 4, 2025
Treatment Area 2 – November 24, 2025
Treatment Area 3 – December 10, 2025
PEP (ACP/HLB): Riverside County 2025-04 – October 30, 2025
Map Only: Riverside County Emergency Program Area 2025-04 – October 30, 2025
Treatment Area 1 – October 30, 2025
PEP (ACP/HLB): Riverside County 2025-03 – October 1, 2025
Map Only: Riverside County Emergency Program Area 2025-03 – October 1, 2025
Treatment Area 1 – October 1, 2025
Treatment Area 2 – October 6, 2025
PEP (ACP/HLB): Riverside County 2025-02 – September 8, 2025
Map Only: Riverside County Emergency Program Area 2025-02 – September 8, 2025
Treatment Area 1 – September 8, 2025
Treatment Area 2 – September 10, 2025
PEP (ACP/HLB): Riverside County 2025-01 – May 16, 2025
Map Only: Riverside County Emergency Program Area 2025-01 – May 16, 2025
Treatment Area 1 – May 19, 2025
Treatment Area 2 – July 10, 2025
PEP (ACP/HLB): Riverside County 2024-03 – November 12, 2024
Map Only: Riverside County Emergency Program Area 2024-03 – November 12, 2024
Treatment Area 1 – November 13, 2024
Treatment Area 2 – November 15, 2024
Treatment Area 3 – December 6, 2024
Treatment Area 4 – December 23, 2024
Treatment Area 5 – January 17, 2025
Treatment Area 6 – February 5, 2025
Treatment Area 7 – February 19, 2025
Treatment Area 8 – March 6, 2025
Treatment Area 9 – March 25, 2025
Treatment Area 10 – April 8, 2025
Treatment Area 11 – April 18, 2025
PEP (ACP/HLB): Riverside County 2024-02 – September 6, 2024
Map Only: Riverside County Emergency Program Area 2024-02 – September 6, 2024
Treatment Area 1 – September 10, 2024
Treatment Area 2 – September 17, 2024
Treatment Area 3 – October 29, 2024
PEP (ACP/HLB): Riverside County 2024-01 – February 6, 2024
Map Only: Riverside County Emergency Program Area 2024-01 – February 6, 2024
Treatment Area 1 – February 29, 2024
Treatment Area 2 – February 29, 2024
Treatment Area 3 – February 29, 2024
Treatment Area 4 – February 29, 2024
Treatment Area 5 – March 28, 2024
Treatment Area 6 – April 17, 2024
Treatment Area 7 – May 2, 2024
Treatment Area 8 – May 16, 2024
Treatment Area 9 – June 4, 2024
Treatment Area 10 – June 19, 2024
Treatment Area 11 – July 23, 2024
Treatment Area 12 – August 20, 2024
Sacramento County
Notice of Treatment (NOT)
None at this time.
Proclamation of an Emergency Program (PEP)
None at this time.
San Benito County
Notice of Treatment (NOT)
None at this time.
Proclamation of an Emergency Program (PEP)
PEP (ACP): Hollister, San Benito County 2026-01 – September 4, 2026
Map Only: Hollister, San Benito County 2026-01 – September 4, 2026
San Bernardino County
Notice of Treatment (NOT)
None at this time.
Proclamation of an Emergency Program (PEP)
PEP (ACP/HLB): San Bernardino County 2026-01 – March 20, 2026
Map Only: San Bernardino County 2026-01 – March 20, 2026
Treatment Area 1 - March 20, 2026
Treatment Area 2 - April 17, 2026
Treatment Area 3 - July 27, 2026
Treatment Area 4 – August 24, 2026
PEP (ACP/HLB): San Bernardino County 2025-02 – January 27, 2026
Map Only: San Bernardino County Emergency Program Area 2025-02 – January 27, 2026
Treatment Area 1 - January 27, 2026
PEP (ACP/HLB): San Bernardino County 2025-01 – August 18, 2025
Map Only: San Bernardino County Emergency Program Area 2025-01 – August 18, 2025
Treatment Area 1 - August 18, 2025
Treatment Area 2 - August 26, 2025
Treatment Area 3 - August 29, 2025
Treatment Area 4 – October 31, 2025
Treatment Area 5 – November 24, 2025
Treatment Area 6 – December 10, 2025
PEP (ACP/HLB): San Bernardino County 2024-01 – February 9, 2024
Map Only: San Bernardino County Emergency Program Area 2024-01 – February 9, 2024
Treatment Area 1 - February 29, 2024
Treatment Area 2 - February 29, 2024
Treatment Area 3 - February 29, 2024
Treatment Area 4 - February 29, 2024
Treatment Area 5 - March 28, 2024
Treatment Area 6 - April 18, 2024
Treatment Area 7 – May 2, 2024
Treatment Area 8 – May 16, 2024
Treatment Area 9 – June 4, 2024
Treatment Area 10 – July 8, 2024
Treatment Area 11 – July 23, 2024
Treatment Area 12 – August 23, 2024
Treatment Area 13 – September 4, 2024
Treatment Area 14 – September 17, 2024
Treatment Area 15 – October 29, 2024
Treatment Area 16 – November 1, 2024
Treatment Area 17 – November 15, 2024
Treatment Area 18 – December 6, 2024
Treatment Area 19 – December 23, 2024
Treatment Area 20 – January 17, 2025
Treatment Area 21 – February 5, 2025
Treatment Area 22 – February 19, 2025
Treatment Area 23 – March 6, 2025
Treatment Area 24 – April 1, 2025
Treatment Area 25 – May 16, 2025
San Diego County
Notice of Treatment (NOT)
None at this time.
Proclamation of an Emergency Program (PEP)
PEP (ACP/HLB): San Diego County 2026-02 – August 28, 2026
Map Only: San Diego County Emergency Program Area 2026-02 – August 28, 2026
Treatment Area 1 – August 28, 2026
PEP (ACP/HLB): San Diego County 2026-01 – March 20, 2026
Map Only: San Diego County Emergency Program Area 2026-01 – March 20, 2026
Treatment Area 1 – March 20, 2026
PEP (ACP/HLB): San Diego County 2025-02 – May 7, 2025
Map Only: San Diego County Emergency Program Area 2025-02 – May 7, 2025
Treatment Area 1 – May 7, 2025
Treatment Area 2 – June 26, 2025
Treatment Area 3 – February 20, 2026
PEP (ACP/HLB): San Diego County 2025-01 – April 3, 2025
Map Only: San Diego County Emergency Program Area 2025-01 – April 3, 2025
Treatment Area 1 – April 3, 2025
Treatment Area 2 – April 8, 2025
Treatment Area 3 – April 30, 2025
PEP (ACP/HLB): San Diego County 2024-02 – October 3, 2024
Map Only: San Diego County Emergency Program Area 2024-02 – October 3, 2024
Treatment Area 1 – October 4, 2024
Treatment Area 2 – November 6, 2024
PEP (ACP/HLB): San Diego County 2024-01 – February 5, 2024
Map Only: San Diego County Emergency Program Area 2024-01 – February 5, 2024
Treatment Area 1 – February 29, 2024
Treatment Area 2 – February 29, 2024
Treatment Area 3 – April 8, 2024
Treatment Area 4 – May 20, 2024
Treatment Area 5 – July 29, 2024
Treatment Area 6 – August 1, 2024
Treatment Area 7 – August 12, 2024
Treatment Area 8 – September 4, 2024
Treatment Area 9 – September 9, 2024
San Francisco County
Notice of Treatment (NOT)
None at this time.
Proclamation of an Emergency Program (PEP)
None at this time.
San Joaquin County
Notice of Treatment (NOT)
None at this time.
Proclamation of an Emergency Program (PEP)
None at this time.
San Luis Obispo County
Notice of Treatment (NOT)
None at this time.
Proclamation of an Emergency Program (PEP)
None at this time.
San Mateo County
Notice of Treatment (NOT)
None at this time.
Proclamation of an Emergency Program (PEP)
None at this time.
Santa Barbara County
Notice of Treatment (NOT)
None at this time.
Proclamation of an Emergency Program (PEP)
PEP (ACP): Santa Barbara, Santa Barbara County 2026-01 – April 1, 2026
Map Only: Santa Barbara, Santa Barbara County 2026-01 – April 1, 2026
Santa Clara County
Notice of Treatment (NOT)
None at this time.
Proclamation of an Emergency Program (PEP)
PEP (ACP): Morgan Hill and San Jose, Santa Clara County 2025-01 – May 30, 2025
Map Only: Morgan Hill and San Jose, Santa Clara County 2025-01 – May 30, 2025
PEP (ACP): San Jose, Santa Clara County 2024-02 – September 23, 2024
Map Only: San Jose, Santa Clara County 2024-02 – September 23, 2024
PEP (ACP): San Jose, Santa Clara County 2024-01 – June 11, 2024
Map Only: San Jose, Santa Clara County 2024-01 – June 11, 2024
Sonoma County
Notice of Treatment (NOT)
None at this time.
Proclamation of an Emergency Program (PEP)
None at this time.
Tulare County
Notice of Treatment (NOT)
None at this time.
Proclamation of an Emergency Program (PEP)
PEP (ACP): Lemon Cove and Woodlake, Tulare County – September 26, 2025
Map Only: Lemon Cove and Woodlake, Tulare County – September 26, 2025
PEP (ACP): Tulare County 2024-01 – September 18, 2024
Map Only: Tulare County 2024-01 – September 18, 2024
Ventura County
Notice of Treatment (NOT)
None at this time.
Proclamation of an Emergency Program (PEP)
PEP (ACP/HLB): Ventura County 2026-01 – August 24, 2026
Map Only: Ventura County Emergency Program Area 2026-01 – April 24, 2026
Treatment Area 1 – August 24, 2026
Treatment Area 2 – September 24, 2026
PEP (ACP): Fillmore, Ventura County 2026-01 – April 23, 2026
Map Only: Fillmore, Ventura County 2026-01 – April 23, 2026
PEP (ACP/HLB): Ventura County 2025-01 – November 25, 2025
Map Only: Ventura County Emergency Program Area 2025-01 – November 25, 2025
Treatment Area 1 – November 25, 2025
Treatment Area 2 – December 19, 2025
Treatment Area 3 – May 13, 2026
Treatment Area 4 – May 26, 2026
Treatment Area 5 – June 4, 2026
Treatment Area 6 – June 17, 2026
Treatment Area 7 – July 1, 2026
Treatment Area 8 – July 23, 2026
PEP (ACP/HLB): Ventura County 2024-02 – September 10, 2024
Map Only: Ventura County Emergency Program Area 2024-02 – September 10, 2024
Treatment Area 1 – September 11, 2024
Treatment Area 2 – October 22, 2024
Treatment Area 3 – March 25, 2025
Treatment Area 4 – April 22, 2025
Treatment Area 5 – May 1, 2025
Treatment Area 6 – May 8, 2025
Treatment Area 7 – June 3, 2025
Treatment Area 8 – July 11, 2025
Treatment Area 9 – July 18, 2025
Treatment Area 10 – August 20, 2025
Treatment Area 11 – October 29, 2025
PEP (ACP/HLB): Ventura County 2024-01 – February 5, 2024
Map Only: Ventura County Emergency Program Area 2024-01 – February 5, 2024
Treatment Area 1 – February 29, 2024
Treatment Area 2 – February 29, 2024
Treatment Area 3 – February 29, 2024
Treatment Area 4 – February 29, 2024
Treatment Area 5 – July 3, 2024
Treatment Area 6 – July 23, 2024
Treatment Area 7 - July 29, 2024
Treatment Area 8 - August 13, 2024