Washington pesticide license for lawn care and landscaping companies

Washington reorganized its pesticide exam categories on January 1, 2026, so older advice about which tests a lawn company takes may be out of date. The Washington State Department of Agriculture (WSDA) says its categories now follow the federal certification and training changes, and it posts a before-and-after comparison chart. Everything below comes from the current category page and the commercial applicator page, read on 2026-10-01.

Which exams a lawn company takes

WSDA does not name a "lawn care" category. It sorts by what you spray, so on our reading of these descriptions a typical lawn and ornamental route lands on three exams:

Exam	What it covers, per WSDA	Questions and time (computer, 2026)
Laws and Safety	Required for all licenses except dealer manager, structural pest inspector and the private applicator types	55 questions, 1 hour
Weed Control	Weeds in agricultural, forest, right-of-way, turf and ornamental situations	65 questions, 2 hours
Insect and Disease Control	Insecticides, fungicides and similar products in ornamental, turf and right-of-way sites, including parks, schools and yards	70 questions, 2 hours

Insect and Disease Control does not allow fumigants or perimeter treatments around structures. Structural work falls under separate PCO categories, and mosquito work has a fact sheet. Question counts and time limits come from WSDA's computer-based testing page, which marks them subject to change. If you only spray herbicide, Laws and Safety plus Weed Control is the pair. If you only treat insects and diseases, swap in the other category.

Washington State University maintains study manuals for most of the exams, and WSU runs pre-license courses in English and Spanish.

One license for the person and the company

The Commercial Applicator license is a joint company and individual license, and the person who makes the application decisions for the company is the one who must hold it. Employees who spray hold a separate commercial operator license, which is $85 a year and is valid only if WSDA has the operator listed as an employee on your company record. You must be 18 to apply and take exams.

From application to license

1. Qualify by passing the exams in Washington (steps 2 and 3), or by holding a valid license from a reciprocal state.
2. Submit the application and pay the $250 application fee. For computer testing this happens in the Metro Institute portal, and WSDA says you cannot schedule an exam until this year's license fee is paid and your application approved.
3. Schedule and take the exams at $58 each, paid by credit card at booking.
4. Complete the company application. Equipment fees are $27 for each apparatus after the first.
5. File proof of financial responsibility.
6. Hold or obtain a business license from the Washington Department of Revenue.

A lawn company taking the three exams above pays $250 plus $174 in exam fees, or $424 before extra rigs. We added that up ourselves from WSDA's published figures. A computer retake means paying the $58 again at scheduling, and WSDA imposes a 14-day wait after a second, third or fourth failure and 60 days after the fifth. Paper exams are still given in Olympia, Yakima, Moses Lake, Spokane, Burlington and East Wenatchee, paid by check or money order on the day. Computer sites run from Bellingham to Pullman.

Insurance: two options

Washington sets its terms under RCW 17.21.160 and 17.21.170. You can carry a liability policy with $50,000 public liability, $50,000 property damage and a deductible of no more than $5,000, shown on WSDA's insurance certificate form, or post a surety bond of at least $100,000. Proof goes to WSDA by email or mail before a new license issues, and before the previous policy or bond expires for existing licensees. If it lapses, WSDA says it will begin suspension procedures.

If a client contract asks for more than the state's figures, the certificate you file with WSDA does not satisfy it. The pesticide applicator insurance guide shows how a chemical endorsement fits beside the state figures. The base policy those limits sit on is in the general liability guide, and Washington's figures sit beside other states' in the pesticide license table.

Renewing and recertifying

The license renews every year at $250, with a $25 penalty fee when late. The renewal page we read did not give a due date. You are also on a five-year recertification cycle, which you can meet by credits, by retesting at the end of the cycle, or through a reciprocal license. For commercial applicators the credit requirement is 40 credits, with no more than 15 counted in any calendar year. Credits cannot carry over, and WSDA says the course sponsor must report them. The renewal page also says you must meet the new certification and training requirements to recertify, even with enough credits, and links a short quiz.

Report changes to your name, address, equipment, employed operators or locations within 30 days, on the supplemental application.

Fertilizer-only work

The WSDA pages we read cover pesticides and are silent on fertilizer-only applications, so we can't say whether that work needs a pesticide license. WSDA's licensing line is 877-301-4555.

The license search

WSDA's license search finds a person, license number or company, and results include the recertification credit report. It showed a database update of 9/30/2026 when we read it. It only returns licensees who renewed within the last two years, so an empty result can mean unlicensed or inactive.