Pesticide applicator license in Minnesota: what a lawn care company needs

Minnesota licenses lawn care in two pieces, and the Department of Agriculture (MDA) runs both. The pesticide applicator license covers herbicide, insecticide and fungicide. The fertilizer license covers the granular application you put down afterward. Most lawn programs do both on the same visit, so most lawn companies hold both.

Fertilizer takes its own license

The MDA's license types page says applications of fertilizer require a fertilizer license, and its category list says fertilizer applications under Turf & Ornamentals are licensed separately. The fertilizer licensing page says anyone who custom applies fertilizer for hire needs one, and names lawns, plants, trees, shrubs and interior landscapes. It is valid January 1 to December 31 and issued per business location. The page we read describes no exam for it.

The two MDA pages disagree on the price. The fertilizer licensing page gives a $100 annual fee plus a $50 surcharge for the Agricultural Chemical Response and Reimbursement Account. The fee schedule lists $100, a $42 surcharge and a $5 processing fee. Both pages were read on 2026-10-01. Ask the MDA fertilizer program at 651-201-6234 which one applies before you write the check. MDA mails renewals each November, and one postmarked after December 31 draws a $50 penalty on both pages.

The fertilizer application also asks for workers' compensation details. MDA's workers' comp page says businesses applying for a fertilizer license must show compliance with the state workers' compensation law, and the form asks whether you have paid employees in Minnesota. The workers' comp guide covers the seasonal-hire side.

The pesticide license: Core plus E

The commercial license is for anyone who applies a pesticide for hire, and the MDA defines for hire as charging or invoicing for the service. Every applicant passes the Core exam (category A) plus at least one category. For lawn work that is E, Turf & Ornamentals, which the license types page describes as covering lawns, parks, athletic fields, golf courses, nurseries and greenhouses. Mosquito and tick work is a different category (L), and sewer root control is another.

The license belongs to the person and to one employer. The renewal page says the license becomes invalid when an applicator leaves an employer, and that you can't work for a new company until you hold a license under that company's name. Commercial applicators have to carry the license card, or the electronic copy, whenever they apply any pesticide.

Getting certified

Start by applying online at the MDA, with your employer's name and address, and certify that you meet the financial requirements. The testing page says to pay before you test, and that application and surcharge fees are not refundable. The study materials come from the University of Minnesota Extension Pesticide Manual Store, which the testing page links.

Computer exams go through Metro Institute at $60 per exam, and the MDA asks for four business days after your payment before you schedule. County partners offer paper or computer exams, and some charge a facility fee. Bring photo ID. The exam is closed book, mostly multiple choice, and 70% passes. It comes in English or Spanish, but request Spanish at least seven days ahead, and not every site has it. After a failed exam you can sit it three times within the licensing period.

Paper answer sheets are mailed to St. Paul for scoring. Computer exams score on the spot.

What it costs each year

The MDA fee schedule breaks the commercial applicator license into a $50 license fee, a $21 surcharge and a $5 processing fee, for $76 at issue and on each annual renewal. A renewal after March 1 carries a $25 late fee. A duplicate is $10. Fees were read on 2026-10-01. The license runs through December 31 whenever you start, and renewal forms go to the employer in November and December.

Renewal and recertification

Renewal comes every year, and recertification follows a longer cycle. The recertification page says the workshop cycle for Turf & Ornamentals is two years, and that every approved workshop includes Core credit. You attend a workshop in the year on your license card, or you retest.

The first workshop is due the year after you pass. A retest is $75 per category on the same page, and the retest has to be paid by mail or at the testing session, since the online renewal won't take it. Workshops listed there for 2026 include the Minnesota Nursery and Landscape Association events and University of Minnesota Extension sessions, in person and online.

Insurance that can't exclude pesticide misuse

Minnesota's financial responsibility page accepts any one of three things: a certificate of insurance at $50,000 for bodily injury or death per person and per occurrence and $25,000 for property damage per occurrence, a surety bond for the same amounts, or a certificate of net assets of $50,000 or more from a Minnesota-authorized financial institution. You certify on the application and are not asked to upload anything, but you have to produce the paper when the MDA asks.

Fine print on the policy:

• If your employer carries the insurance or bond, employee applicators need not.
• The deductible can't exceed $500.
• The insurer has to promise the MDA at least ten days' notice before cancelling.
• "Conditions, riders or endorsements that specifically exclude coverage for misuse of any pesticide are not allowed," in the page's words. Whether a standard pollution exclusion counts as one is a question for the MDA, so get your agent to confirm in writing that nothing on the policy excludes pesticide misuse.

The coverage must also cover handling, storage, disposal and application. If a claim is paid and the limits drop, you replace them.

Most lawn companies buy an endorsement to get there, and the pesticide applicator insurance guide explains it. The certificate of insurance guide covers the paper to carry, and the multi-state hub lines Minnesota up against the other states we have confirmed.

Not on the pages we read

No practice test turns up on the pages we read, and none says how long a new applicant waits for approval. We did not open MDA's license lookup.

City signs

The MDA's turf warning sign page says cities may require licensed applicators to post a sign on treated turf, but a city has to adopt the ordinance first. The state law sets the sign at least 18 inches above the grass, rain-resistant for 48 hours, with a safe entry date, placed two to five feet from the sidewalk or street.