Protecting Bees & Your Team: Best Practices for Nighttime Applications

Honey bee health remains a top priority for almond growers as bloom approaches. According to the Almond Board of California’s Honey Bee Best Management Practices (BMP), one of the most effective ways to reduce bee exposure to crop protection materials is to schedule applications during the evening or nighttime hours, when foraging bees have returned to their hives. The BMPs also emphasize strong communication among growers, beekeepers, PCAs, and applicators to ensure everyone involved knows when applications will occur and can coordinate accordingly.

Working after dark though can be dangerous. While doing so helps to reduce pollinator exposure to applications, it also requires growers to operate within California’s specific nighttime safety regulations.

Understanding Nighttime Safety Requirements

California’s Outdoor Agricultural Operations During Hours of Darkness standards apply to all agricultural work occurring between sunset and sunrise. These regulations require growers to ensure adequate visibility throughout the work environment. Orchard areas, walkways, and paths to restrooms must meet minimum illumination levels measured directly where workers walk or perform tasks. 

Additionally, equipment such as trucks, tractors, and other self-propelled machinery must have headlights and rear lights capable of illuminating at least 50 feet ahead and behind, improving safety for both operators and ground crews. These lighting requirements help reduce the risks posed by diminished nighttime visibility, especially when work involves multiple people and moving equipment.

Preparing Crews with Pre‑Shift Safety Meetings

Before each night shift begins, California regulations require supervisors to hold a safety meeting to review important site information. Workers must be informed of the locations of restrooms, drinking water, designated break areas, nearby bodies of water, and high traffic zones. Because nighttime conditions can make familiar surroundings more difficult to navigate, these meetings ensure workers can safely move around the orchard and are aware of any specific hazards. 

Employers are also required to provide and ensure the use of Class 2 high‑visibility garments, helping equipment operators maintain awareness of workers on the ground. Review the Outdoor Agricultural Operations During Hours of Darkness fact sheet for more information and all of the requirements.

A Unified Approach for Safer, More Effective Operations

When growers pair honey bee protection guidelines with the required safety measures for nighttime work, the result is a more sustainable and efficient approach to orchard management. Bees remain safely inside their hives during nighttime applications, greatly reducing their exposure to crop protection materials. At the same time, crews can work confidently and safely under proper lighting, with clear preparation and the right equipment.

As bloom approaches, these practices support the long‑standing commitment of the almond industry to safeguard both pollinators and people. This thoughtful balance ensures that orchards remain not only productive, but also safe and welcoming places for the bees that sustain them. To learn more about protecting pollinators, download the ABC Honey Bee Best Management Practices guide.