Treatment Schedules by Region

Treatment strategies for the Asian citrus psyllid are different in various regions of the state depending on if the psyllid is well-established (requiring an area-wide management strategy) or is new to an area (requiring an eradication strategy). More details about eradication strategies and treatments can be found on the University of California’s website.

Below are the currently scheduled coordinated and area-wide treatments across the state. All dates and information are subject to change. For additional questions or information, contact your grower liaison about area-wide management and how to implement the recommended protocols.

Central Coast

Winter 2022 Treatment:

  • January 3 - January 23, 2022
    • Citrus growers with 25 or more trees are asked to treat for ACP during this time frame, or as close to it as possible considering weather and orchard conditions.

Eradication – no area-wide treatment

Fall 2022 PMA Treatment Window (1st application)

  • July 11 – Aug. 1, 2022: V-5, V-6, V-31, V-32, V-34, V-35
  • July 18 – Aug. 8: V-7, V-8, V-24, V-25, V-29, V-30
  • July 25 – Aug. 15: V-3, V-4, V-9, V-23, V-27, V-28, V-33 V-44, V-45, V-46, V-47, V-48, V-49, V-50
  • Aug. 1 – Aug. 22: V-1, V-2, V-16, V-21, V-22, V-26
  • Aug. 8 – Aug. 29: V-15, V-18, V-19, V-20, V-42, V-43
  • Aug. 15 – Sept. 5: V-10, V-13, V-14, V-37, V-38, V-39
  • Aug. 22 – Sept. 12: V-11, V-12, V-17, V-36, V-40, V-41

Fall 2022 PMA Treatment Window (2nd application)

  • Sept. 12 – Oct. 3, 2022: V-5, V-6, V-31, V-32, V-34, V-35
  • Sept. 19 – Oct. 10: V-7, V-8, V-24, V-25, V-29, V-30
  • Sept. 26 – Oct. 17: V-3, V-4, V-9, V-23, V-27, V-28, V-33 V-44, V-45, V-46, V-47, V-48, V-49, V-50
  • Oct. 3 – Oct. 24: V-1, V-2, V-16, V-21, V-22, V-26
  • Oct. 10 – Oct. 31: V-15, V-18, V-19, V-20, V-42, V-43
  • Oct. 17 – Nov. 7: V-10, V-13, V-14, V-37, V-38, V-39
  • Oct. 24 – Nov. 14: V-11, V-12, V-17, V-36, V-40, V-41

Winter 2023 PMA Treatment Window

  • Jan. 2 – Jan. 23, 2023: V-5, V-6, V-31, V-32, V-34, V-35
  • Jan. 9 – Jan. 30: V-7, V-8, V-24, V-25, V-29, V-30 J
  • Jan. 16 – Feb. 6: V-3, V-4, V-9, V-23, V-27, V-28, V-33 V-44, V-45, V-46, V-47, V-48, V-49, V-50
  • Jan. 23 – Feb. 13: V-1, V-2, V-16, V-21, V-22, V-26
  • Jan. 30 – Feb. 20: V-15, V-18, V-19, V-20, V-42, V-43
  • Feb. 6 – Feb. 27: V-10, V-13, V-14, V-37, V-38, V-39
  • Feb. 13 – Mar. 6: V-11, V-12, V-17, V-36, V-40, V-41

Growers will be notified about the date of their treatment window either by their packinghouse field reps, their PCAs, or by the Ventura County Grower Liaisons. It will be up to the growers to work with their PCAs and applicators to schedule your treatments.

Central Valley

Eradication – no area-wide treatment

Fall 2022:

  • The Kern County ACP/HLB Task Force is recommending growers treat commercial orchards between mid-August and mid-September.

Eradication – no area-wide treatment

Eradication – no area-wide treatment

Eradication – no area-wide treatment

Southern California

Winter 2022:

  • December 20, 2021 - February 6, 2022
    • The District is requiring that both conventional and organic applicators spray the perimeter of your grove(s) first. Winter 2022 ACP Treatments are currently open with most Growing Zones starting on January 3rd or 10th. If you are not sure which zone you are in or the agreed upon treatment dates, please contact Curtis Pate at curtis@agtegrity.net.

2022 ACP Treatment Schedule*

  • Spring Treatment – April 15 – July 30
  • Summer Treatment – July 1 – August 31
  • Fall Treatment – October 1 – November 15
  • Winter Treatment – November 16 – December 31

*Note: The dates above are for non-Pest Control District areas. If your operations are in a PCD, your PCD Manager will provide the ACP treatment schedule.

2022 ACP Treatment Schedule

  • Spring Treatment – April 15 – July 30
  • Summer Treatment – July 1 – August 31
  • Fall Treatment – October 1 – November 15
  • Winter Treatment – November 16 – December 31

Fall 2022:

  • Pauma Valley and San Pasqual Valley – August 24 to September 7
  • Anza Borrego - Sept 1-15 (systemic), Sept 30 to Oct 14 (foliar)
    • *Organic operations must do two applications within 10 days of each other with at least one application within the treatment window.