Maryland pesticide applicator license for lawn care and landscaping
Checked October 2026
Maryland requires a pesticide business license, $150 a year, for any company that applies general or restricted use pesticides for hire, including lawn care companies using weed and feed. The business must employ a certified applicator, who needs one year of experience, a qualifying degree or approved courses, then a passing score of 70% on the Core and a category exam. Certification costs $75 a year. Insurance minimums are $100,000 per person and $300,000 per occurrence for bodily injury.
Maryland decides your timeline before you ever sit an exam. To be certified you need a year of hands-on experience, a qualifying degree or approved coursework, and the business license can't issue without a certified applicator named on the application. The licensing details come from the Maryland OneStop license page, read October 1, 2026. The Maryland Department of Agriculture (MDA) site returned a 403 error to us that day, in a browser session too, so the category list, exam schedule and requirements document are copies the Internet Archive saved between December 2025 and March 2026 (dates in the links).
Who needs what
OneStop defines a pesticide business as any business applying general or restricted use pesticides for hire, and it names lawn care companies using weed and feed or organic pesticides and landscapers using Roundup. So the business license applies from the first customer, and so does the certified applicator behind it.
MDA's category list splits Category 3, Ornamental and Turf, into 3A exterior ornamentals (plants in the landscape and weed control in beds), 3B interior plantscaping and 3C turf, which covers weed, insect and disease control on lawns. A lawn and bed company will likely want 3C and 3A. Fees are charged by main category, not subcategory, so holding all three letters under Category 3 costs the same as holding one.
Getting eligible to test
An applicant must be at least 18 and have one year of practical application experience as a registered employee in the category. A degree in a biological field such as horticulture or agronomy can stand in for the experience, and so can certain approved courses.
MDA's approved course list says each approved course counts as six months. Anyone using courses to make up the year must take one titled Pesticide Use and Safety, plus a second course approved for their category. The list includes online courses from outside providers with approvals for 3A and 3C, which is the likeliest route for an owner with no degree and no licensed employer to train under.
If you do work under a licensee first, the licensee has to train each employee within 30 days of hire. MDA's requirements document puts the registered employee fee at $30 to start and $30 a year, and until the training is done an employee may only spray with a certified applicator or another registered employee on site. Its footer reads Revised 6/2019 although the filename says 2021, and we found no newer source for the $30, so confirm it with MDA.
The exam, and a conflict on where
Applications go in at least one month before the exam, with experience or transcript documentation attached. You pass the Core and one category exam, closed book and multiple choice, at 70% or higher. A retake costs $10 per exam, paid at the exam.
OneStop says MDA gives the commercial exams every other month in Annapolis, Salisbury and Frederick. MDA's own 2026 exam schedule lists Denton, Boonsboro and Annapolis instead, in February, April, June, August, October and December. The schedule is the more specific document, dated January 1, 2026, and the copy we read was saved March 10, 2026. It shows applications postmarked by November 13 for the December 14, 15 and 18 sessions, and warns that dates and locations can change. Call (410) 841-5710 before you book a day off.
What it costs
| Item | Amount | Source |
|---|---|---|
| Business license | $150 a year, July 1 to June 30 | OneStop |
| Certification, first category | $75 a year | OneStop |
| Each additional main category | $25 a year | OneStop |
| Exam retake | $10 per exam | MDA testing information |
These are the fees the OneStop page showed on 2026-10-01. A one-person company is at $225 a year for the license and one certification. The pages we read don't give the first exam fee.
Insurance, workers' comp and the paperwork
The business must file proof of general liability: $100,000 bodily injury per person and $300,000 per occurrence, plus $15,000 property damage per occurrence with a $30,000 annual aggregate. The OneStop application checklist asks for the original certificate with its policy number and expiration date, and says photocopies can't be accepted. It also says an employer with even one employee must carry workers' compensation and file proof of it.
The bodily injury limits are ordinary. The property damage floor is smaller, and it says nothing about whether damage to the lawn you were hired to treat is covered. That depends on your policy's care, custody or control wording and on whether you have an applicator endorsement, both covered in the pesticide applicator insurance guide. Have the original certificate issued before the application is mailed. For crews, see the workers' comp guide, and the pesticide license hub shows the same figures for other states.
Renewal and continuing education
The business license renews by June 30, and the license holder renews its applicators' certificates at the same time. A Category 3 applicator needs eight credits every year, and one credit is half an hour of MDA-approved training. Miss the credits and the applicator retakes the exams by June 30. MDA's renewal walkthrough says the online system needs the license number and a code from the mailed renewal card. Online-course credit is limited to once in three years, according to MDA's renewal site.
Lookup and moving in from another state
The renewal site includes a business, applicator and recertification search covering licensed businesses, certified applicators, dealers and approved recertification sessions. Reciprocity is a one-time process open only to non-residents who hold certification in their home state. Maryland residents sit the exams. South Carolina's DPR gives Maryland applicators full commercial reciprocity, and the South Carolina page has the details.