Drone Spraying in San Bernardino County, CA for Citrus and Alfalfa

San Bernardino County drone spraying prices

Drone spraying in San Bernardino County, CA is priced per acre for one pass, application only. Farms here are small: the 2022 USDA census counted 809 operations averaging just 45 acres. Most spray work is in citrus groves around Redlands and Highland, nursery and vineyard blocks in the west valley, and alfalfa under pivots in the High Desert. The rates below are built for those blocks.

Service	Typical rate	Notes
Alfalfa and hay passes	from $15/acre	Weevil, aphids, worms
Vegetable and field blocks	from $16/acre	Where the label allows aerial use
Vineyard fungicide and insecticide	from $17/acre	Mildew and mite programs
Citrus and avocado groves	from $19/acre	Higher volume, slower passes
Nursery, greenhouse and spot work	from $20/acre	Shade coats, small or broken blocks

Product is billed separately, or the grower supplies it. California drone rates run about $14–22 per acre for alfalfa and field crops, $17–34 for vineyards and $18–35 for orchards, with $18 typical in 2026. Our rates sit at or below those ranges. Price depends on spray volume, canopy height, block size, slopes, wires and homes nearby, and the drive from the valley to the desert. The minimum charge is $350 per visit, which covers county registration, notices and setup.

What San Bernardino County grows

Commodity (2023 crop report)	Value	Acres
Milk and milk products	$112.2M	–
Livestock	$79.1M	–
Eggs	$74.5M	–
Trees and shrubs, incl. roses	$16.6M	270 field acres
Citrus	$11.0M	2,293 harvested
Alfalfa	$8.4M	3,807 harvested
Groundcover and bedding plants	$7.9M	38 field acres
Oriental vegetables	$4.6M	564 harvested
Apiary products	$4.3M	49,244 hives
Avocados	$4.3M	–

The county's gross value was $381.2 million in 2023. The census adds about 4,630 acres of orchards and 731 acres of vineyards. Crop acres are modest next to the county's size, but each block tends to be high-value and boxed in by homes, roads and warehouses. That is exactly where a drone earns its place over an airblast rig or an airplane.

How drone spraying works on San Bernardino County blocks

1. Recommendation. The grower's pest control adviser writes the product, rate and timing, and confirms the label allows aerial use.
2. Notices and mapping. The operator files any required notices and maps homes, schools, roads, wires, hives and water.
3. Flight. The drone works a few feet above the canopy at the volume the label requires and shuts off at mapped buffers.
4. Report. The grower gets product, rate, acres, time and weather in writing, and the operator files the use report.

Small groves on slopes below the San Bernardino Mountains, nursery rows in Ontario and vineyard blocks in Rancho Cucamonga share one thing: there's little room to turn a tractor. A drone works them from the edge.

HLB and Asian citrus psyllid in San Bernardino County

CDFA confirmed the bacterium that causes huanglongbing in trees or psyllids in Alta Loma, Chino, Ontario, Rancho Cucamonga and San Bernardino between April 28 and May 16, 2025. An HLB quarantine took effect May 19, 2025. The emergency program covers 5 miles around each positive tree, from Chino Hills and Upland east through Fontana, Rialto, Colton, Loma Linda, Highland and Redlands. Treatment around detection sites is done by state crews with ground equipment. For commercial growers, the job is to keep psyllid numbers down across the whole grove on a schedule the PCA sets. Drones help with border rows and small blocks where a sprayer can't keep up. Fruit and nursery stock moving out of the zone must follow quarantine rules.

The Redlands fruit fly quarantine, now lifted

Oriental fruit fly was found in Redlands in September 2023, and the quarantine grew to about 365 square miles across San Bernardino and Riverside counties, holding roughly 1,800 acres of commercial farmland. USDA lifted the last of it on August 11, 2024, after three fly generations passed with no new detections. San Bernardino County still runs thousands of traps. A new find can bring back harvest and movement rules on short notice, and growers near Redlands are the first to feel it.

Drone spraying San Bernardino County alfalfa in the High Desert

Alfalfa moved into the Mojave in the late 1970s to feed Chino Valley dairies, and growers followed those dairies' hay demand when the Chino preserve ended in the late 1990s. Today pivots run near Newberry Springs, Daggett, Hinkley and Lucerne Valley. Groundwater in the Mojave Basin is adjudicated, and the Baja subarea is pumped well beyond its natural yield, so every pass has to count. Drones treat weevil, aphids and worms between cuttings without driving through wet wheel lines, and they keep spray off neighbors' wells and homesites scattered across the desert. Afternoon wind is the main limit here, so flights run at dawn.

Nursery, greenhouse and Cucamonga vineyard work

• Nursery stock: trees, shrubs, roses and bedding plants top the county's crop list. Shipments are inspected for glassy-winged sharpshooter, so clean stock matters.
• Greenhouse shading: a drone can lay a shade coat on glass or poly roofs without a crew on a ladder.
• Vineyards: the old Cucamonga Valley plantings are small, scattered and surrounded by homes, which suits early-morning drone work.
• Bees: the county kept 49,244 hives in 2023. Operators check hive locations and follow label bee warnings before every bloom-time job.

Airspace from Ontario to the desert

Ontario International sits under Class C airspace, and Chino, San Bernardino International and Southern California Logistics in Victorville all have control towers. Redlands Municipal has none. Much of the San Bernardino County desert lies under military restricted areas around Edwards, China Lake, Fort Irwin and Twentynine Palms. Operators get FAA authorization or check restrictions for every field before flying.

California pilot certification and county rules

Drone applicators in California need FAA Part 107, a Part 137 certificate, and a Section 44807 exemption for drones over 55 pounds. They also need the DPR Unmanned Pest Control Aircraft Pilot Certificate, starting as an Apprentice under a Journeyman. On top of that come a Pest Control Business License with a Qualified Applicator Certificate or License, and annual registration with San Bernardino County Agriculture/Weights and Measures. Restricted materials need a permit and a Notice of Intent through CalAgPermits, and SprayDays gives the public 24 hours' notice. Fields within a quarter mile of a school carry extra reporting rules.