Drone Spraying in Clark County, Washington – Pasture, Berries & Trees

Drone spraying prices in Clark County, WA

Drone spraying in Clark County, Washington is priced per treated acre, with the product or seed billed separately. Washington operators typically charge $14 to $22 per acre for one pass on hay and field crops and $18 to $32 for berries and tree crops, and operators serving southwest Washington start around $15. The starting rates below come from FAA Part 137-certified, state-licensed operators covering Battle Ground, Ridgefield, La Center, Camas, Washougal, Yacolt and Brush Prairie.

Service	Typical rate	Notes
Pasture & hay weed control	from $14/acre	Broadleaf weeds in grass hay
Noxious weed spot spraying	from $18/acre	Tansy ragwort, poison hemlock, blackberry
Blueberry & caneberry passes	from $20/acre	Mummy berry, fruit flies; 5–10 GPA
Christmas tree & nursery passes	from $20/acre	Weeds, aphids, needle diseases
Pasture & hay seeding	from $15/acre	Seed billed separately

Price factors: total acres, label water volume, slope, tree cover, how scattered your parcels are, and travel. Because most Clark County farms are small, expect a minimum of about 10 acres or a flat visit charge near $350. Neighbors along the same road who book the same day can split that charge. Product can come from your farm store or be supplied by the operator.

Drone spraying for small Clark County farms

Clark County is a county of small farms. The USDA 2022 Census of Agriculture counts 1,927 farms on 56,038 acres, an average of only 29 acres, and nearly nine in ten farms are under 50 acres. Hay covers about 13,500 acres, with Christmas trees, blueberries and other berries, nursery stock and pasture making up most of the rest. That makes drones a natural fit:

• a 10-acre hay field or horse pasture is worth spraying without hiring a full-size rig or buying equipment;
• mapped buffers keep product inside your property line next to homes;
• no tractor or sprayer is needed on soft, wet western Washington ground;
• several small parcels can be mapped and flown in one visit.

Noxious weeds on pasture and hay ground

Clark County's noxious weed program requires landowners to control several listed species, and many of them are toxic to livestock. Common drone targets include:

Weed	Why it matters	Typical drone timing
Tansy ragwort	Toxic to horses and cattle	Rosettes in fall and spring
Poison hemlock	Toxic to people and livestock	Before flowering, spring
Himalayan blackberry	Takes over pasture edges	Full leaf, late summer to fall
Scotch broom	Spreads into pasture and clearings	Spring, on young plants
Canada thistle	Spreads by roots in hay	Before bud, and fall regrowth

Spot passes treat only mapped weed patches, and the treatment record helps document your control efforts for the county weed board if you receive a notice. Washington State University Extension in Clark County offers weed identification and control guidance.

Berries, Christmas trees and nurseries

Blueberry and caneberry growers in Clark County use drones for mummy berry and botrytis fungicide at bloom and spotted wing drosophila passes as fruit ripens, without driving between wet rows. Christmas tree farms use drones for weed control between rows, aphid and mite passes, and needle disease fungicide on steep hillside plantings. Nursery blocks can be treated with products labeled for aerial use, with buffers to greenhouses and neighboring homes. Coverage on tall or dense plantings depends on spray volume, so the operator sets water rate and passes by crop.

How Clark County drone spraying works

1. Send property details: parcel locations, acres, crop or pasture, and the weed, pest or disease you want treated.
2. Mapping: the operator outlines each area and marks homes, wells, power lines, streams and neighboring gardens.
3. Scheduling: a dry, calm window that fits the label is booked, which in western Washington usually means planning around rain.
4. Application and record: RTK-guided passes are flown, and you receive treated acres, product, rate and weather data.

Working around western Washington rain

Rain is the biggest constraint on spraying in Clark County. Most products need a dry period after application, and spring and fall can bring only short breaks between showers. Drones help because they need no dry ground to drive on and can be set up quickly, so a crew can fly the morning a dry window opens. Booking ahead and sharing parcel maps early makes it easier to catch those short windows. Late spring and early fall are often the best periods for pasture and noxious weed work, when weeds are actively growing and the forecast gives a few dry hours in a row.

Streams, salmon and the Ridgefield refuge

The Lewis River, East Fork Lewis River, Salmon Creek and the Columbia River run through or along Clark County, and many streams carry protected salmon and steelhead. Ridgefield National Wildlife Refuge sits along the Columbia lowlands. Jobs near these waters use mapped no-spray buffers, follow every water and endangered-species requirement on the label, and are not flown when heavy rain is forecast.

Washington licensing for drone application

Every operator holds an FAA Part 107 remote pilot certificate and a Part 137 agricultural aircraft operator certificate, plus a Section 44807 exemption for drones over 55 lbs. In Washington, applying pesticides for hire requires a commercial pesticide applicator license from the Washington State Department of Agriculture (WSDA), including the aerial category, and an operator license for the business. WSU Extension in Clark County offers pesticide applicator training and small-farm advice.