Ohio pesticide license for lawn care and landscaping businesses

Ohio makes you buy two things before you spray a customer's lawn, a personal license and a company license, and both expire on the same September 30. The Ohio Department of Agriculture (ODA) requires the commercial applicator license for anyone hired to apply any pesticide to someone else's property, and the pesticide business license for the firm. An Ohio State University Extension fact sheet lists lawncare applicators and landscapers among the people it covers and says general use and retail garden center products count.

The order matters

ODA says the business needs at least one Ohio-licensed commercial applicator on staff at each licensed location, and recommends getting your applicator license before you file the business application. The business license also needs a certificate of insurance before it issues. That puts the sequence at exams, applicator license, insurance certificate, business license.

The insurance rule names the lawn

Under OAC 901:5-11-07(B), as ODA reproduces it on the business page, a pesticide business needs a commercial general liability policy plus either a separate professional liability policy or an endorsement covering the properties in your care, custody and control, including damage to the actual properties you are treating. Minimum limits are:

Coverage	Minimum
Per occurrence	$300,000
General aggregate	$300,000
Products and completed operations aggregate	$300,000

The policy must cover each registered location. The certificate has to carry one of ODA's set statements citing the rule, and the insurer agrees to give ODA ten days' notice of cancellation for non-payment and thirty days for any other cancellation. Certificate updates go by email to PesticideInsurance@agri.ohio.gov, because the company renewal portal cannot take them. Seed treatment and boat antifoulant businesses are exempt; a lawn care firm is neither.

A general liability policy alone does not meet the rule as written, so ask your agent for the endorsement or the separate policy by name before you file. The reasoning is in the pesticide applicator insurance guide, and the holder line is in the certificate of insurance guide. The pesticide license table shows how the other states compare.

Which exams

Everyone sits the Commercial Core exam, 90 questions, plus at least one category exam. For lawns that category is 8, Turf Pest Control (50 questions). Category 8 includes 6c, Ornamental Weed Control, so a turf license can also treat bed weeds. Category 6a, General Ornamental, covers insects and disease on trees and shrubs and also includes 6c. A route that treats both lawns and shrubs needs 8 and 6a. ODA's exam page gives the question counts and a passing score of 70 percent.

Written exams are currently free at proctored sites around the state. You can book up to two sessions with at least five business days between them, and passed exams stay valid for a year. Study guides are sold through OSU Extension, which also runs new applicator training. From January 1, 2027, candidates for pesticide exams must be at least 18.

What it costs and when it renews

The applicator application states a $35 license fee, and the company application states $35 for a pesticide business license. Both forms cover October 1, 2026 to September 30, 2027, and the fees are non-refundable. For a one-person company that is $70, our sum from the forms read 2026-10-01.

Both licenses renew every year. The applicator renewal portal says the $35 fee carries a $17.50 late fee after September 30, though its text still referred to the 2025 cycle when we read it. ODA's applicator page adds that a license not renewed by September 30 can still be renewed by March 31, provided the required recertification hours were finished before September 30. Every third year you recertify, either by retaking exams or by taking 5 hours of approved classes: 1 hour of Core and half an hour for each category on the license. Credits do not carry over. ODA lets you check your hours online, and the record can lag a class by up to two weeks.

Helpers: trained servicepersons

An unlicensed employee can mix, load and apply under a licensed applicator if they are a Trained Serviceperson. They read ODA's safety training guide or go through an employer program, and both employee and employer sign a form attesting to it, before the worker's first exposure. The supervisor must hold a valid Ohio commercial applicator license, work for the same company and be within 25 miles or two hours when the helper applies. Employers keep the paperwork for three years after the worker leaves. ODA has flagged changes to direct supervision effective January 1, 2027. If crews are growing, the workers' comp guide covers headcount triggers.

Reciprocity and fertilizer

Residents licensed in Alabama, Florida, Georgia, Illinois, Indiana, Louisiana, Michigan, Minnesota, Mississippi, New York, Pennsylvania, Texas, Virginia or West Virginia can apply for a reciprocal Ohio license without an Ohio exam, using a copy of their driver's license and home-state license.

ODA's fertilizer certification is a separate thing, for fertilizer applied to more than 50 acres of agricultural production grown primarily for sale, per the applicator application. Whether fertilizer-only lawn work needs any ODA license is not stated on the pages we read. ODA defines a pesticide as any substance meant to prevent, destroy, repel or mitigate a pest, which on that wording would take in the herbicide in a weed and feed product, though no page we read mentions weed and feed.

Searching ODA's records

ODA publishes a pesticide applicator search and a pesticide business search, each with a CSV download. Both said they were updated September 14, 2026 when we read them. Business records show the license ID, county, expiration and license type.