Pesticide licence in Maryland: categories, exam and renewal
What the Maryland Department of Agriculture says about the pesticide business license, the pest control applicator certificate, category 3 Ornamental and Turf, the core plus category exam, yearly recertification credits and the general liability insurance minimums.
Checked against the sources at the bottom of this page on October 8, 2026. Rules, fees and pay change: the source has the last word.
This page reports what the official source says. It is not legal advice: ask the office named here. The source is the Maryland Department of Agriculture, Pesticide Regulation Section, which enforces the Maryland Pesticide Applicators Law. Its requirements document, revised July 2026, carries most of the detail below. The parent page, pesticide licences by country, has the national background.
At a glance
| Item | What the department says |
|---|---|
| Agency | Maryland Department of Agriculture, Pesticide Regulation Section |
| Business license | Pesticide business license, US$150 a year, July 1 to June 30 |
| Person | Pest control applicator certificate: US$75 annual for the first category, US$25 per additional main category |
| Categories for trees and turf | 3A Ornamental, Exterior; 3C Turf; 3B Ornamental, Interior; 6 Right-of-Way and Weed |
| Exam | Core plus at least one category, closed book, 70% to pass, US$10 per retake |
| Applicant | At least 18, with one year of experience or a qualifying degree or approved course |
| Recertification | Every year; 8 credits for category 3, where one credit is half an hour |
| Insurance | General liability: bodily injury US$100,000 each person and US$300,000 each occurrence; property damage US$15,000 each occurrence and US$30,000 annual aggregate |
Who needs a business license
The department's licensing and certification page links the full requirements document. The document says a pesticide business is any business offering pest control services or applying general or restricted use pesticides for hire. It names lawn care companies using weed and feed or organic pesticides and landscapers using glyphosate or animal repellents as examples. To get the business license, a firm completes an application, designates at least one person certified in the categories it serves, pays US$150 a year and keeps a current certificate of insurance on file, with the department listed as certificate holder. A separate Not-For-Hire license covers facilities such as private golf courses whose employees apply pesticides, and public agencies hold a no-fee permit.
Categories
The department's pest control categories sheet lists category 3 Ornamental and Turf with 3A Ornamental, Exterior for insect and disease control on plants in the landscape and weed control in plant beds, 3B Ornamental, Interior, and 3C Turf for lawn weeds, insects and disease. Category 6 Right-of-Way and Weed covers roadsides, utilities, railroads, fence lines and structural perimeters. Category 2 is Forest, and 12 is Consultant. A fee applies per main category with a numeric designation, with none for lettered subcategories.
Certification and exam
Under the requirements document, an applicant is at least 18 and has one year of practical application experience as a registered employee in the category, or a degree in a biological field such as horticulture, or an approved initial certification course. The application goes in at least a month before the exam, with experience or transcripts attached. The department offers commercial exams every other month in Annapolis, Salisbury and Frederick. Exams are multiple choice and closed book, with the Core exam plus at least one category exam, each passed with 70% or higher. A retake costs US$10. After passing, the annual certification fee is US$75 for the initial category and US$25 per additional main category. A certificate cannot be transferred, and an applicator holds certification for one place of business at a time. A new employee involved in pest control must finish a department-approved training program within 30 days and be registered with the department for a US$30 yearly fee.
Recertification
The requirements document says certified applicators must attend recertification training each year, and categories 1, 3, 7, 8, 9, 10 and 13 need eight credits, where one credit equals half an hour of training. The meeting must be approved by the department, with sponsors submitting the agenda at least 2 weeks ahead. An applicator who does not attend or document training must retake the exams by June 30 to renew. The business holds responsibility for renewing its license and its employees' certificates, with a June 30 deadline and an online renewal system. Pest control consultants certify under category 12 and need no insurance.
Reciprocity
The requirements document describes reciprocity as a one-time process for a non-resident of Maryland, based on having taken the certification exams in the home state. The applicant sends a copy of the current certificate and a driver's license. Maryland residents are not eligible and must take the exams. A reciprocal certificate holder follows Maryland's laws and recertification training. The document does not list states.
Sources
- Maryland Department of Agriculture, Pesticide Licensing and Certification, read October 8, 2026
- Maryland Department of Agriculture, Pesticide Applicator Certification and Business Licensing Requirements, revised July 2026, read October 8, 2026
- Maryland Department of Agriculture, Pest Control Categories, read October 8, 2026