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
- The latest coordinated Area Wide ACP Treatment Window for Santa Barbara County citrus is April 7 to April 27, 2024, or as close to this window as possible. All properties with 25 or more citrus trees are asked to monitor and treat for ACP to reduce the HLB risk to our area. If you are a grower, please speak to your PCA or applicator to discuss treatments. If you are a PCA or applicator, please make sure your clients are aware of the ACP treatment schedule, especially if you are the permit contact.
Eradication – no area-wide treatment
The annual ACP area-wide management (AWM) treatment protocol for 2024-2025 consists of three applications: a summer, fall, and winter AWM treatment.
Summer 2024 PMA Treatment Window
- Apr 29 – May 27 V-5, V-6, V-31, V-32, V-34, V-35
- May 20 – Jun 17 V-7, V-8, V-24, V-25, V-29, V-30
- Jun 10 – Jul 8 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
- Jul 1 – Jul 29 V-1, V-2, V-16, V-21, V-22, V-26
- Jul 22 – Aug 19 V-15, V-18, V-19, V-20, V-42, V-43
- Aug 12 – Sep 9 V-10, V-13, V-14, V-37, V-38, V-39
- Sep 2 – Sep 30 V-11, V-12, V-17, V-36, V-40, V-41
Fall 2024 PMA Treatment Window
- Sep 30 – Oct 21 V-5, V-6, V-31, V-32, V-34, V-35
- Oct 7 – Oct 28 V-7, V-8, V-24, V-25, V-29, V-30
- Oct 14 – Nov 4 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 21 – Nov 11 V-1, V-2, V-16, V-21, V-22, V-26
- Oct 28 – Nov 18 V-15, V-18, V-19, V-20, V-42, V-43
- Nov 4 – Nov 25 V-10, V-13, V-14, V-37, V-38, V-39
- Nov 18 – Dec 9 V-11, V-12, V-17, V-36, V-40, V-41
Winter 2025 PMA Treatment Window
- Dec 30 – Jan 20 V-5, V-6, V-31, V-32, V-34, V-35
- Jan 6 – Jan 27 V-7, V-8, V-24, V-25, V-29, V-30
- Jan 13 – Feb 3 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 20 – Feb 10 V-1, V-2, V-16, V-21, V-22, V-26
- Jan 27 – Feb 17 V-15, V-18, V-19, V-20, V-42, V-43
- Feb 3 – Feb 24 V-10, V-13, V-14, V-37, V-38, V-39
- Feb 10 – Mar 3 V-11, V-12, V-17, V-36, V-40, V-41
Southern California
Check back later for more details.
Riverside County 2024 ACP Treatment Schedule (outside the PCD)
- Spring Treatment – Apr. 29-May 24, 2024
- Summer Treatment* – Jul. 1-Aug. 2, 2024
- Fall Treatment – Oct. 7-Nov. 1, 2024
- Winter Treatment – Nov. 18-Dec. 20, 2024
*May be a perimeter spray if scouted and determined that the center has no ACP
San Bernardino County 2024 ACP Treatment Schedule
- Spring Treatment – Apr. 29-May 24, 2024
- Summer Treatment* – Jul. 1-Aug. 2, 2024
- Fall Treatment – Oct. 7-Nov. 1, 2024
- Winter Treatment – Nov. 18-Dec. 20, 2024
*May be a perimeter spray if scouted and determined that the center has no ACP
Summer 2024 ACP Areawide Treatment Schedule for San Diego County:
- Pauma & San Pasqual Valley (mandatory in the PCD): Jun. 10 – 24
- San Diego citrus located outside the PCD: Jun. 10 – 24
All properties with 25 or more citrus trees and commercial citrus growers in San Diego County are asked to apply a summer 2024 areawide ACP-effective treatment. For organic groves, each treatment must consist of two applications applied 10-14 days apart.