What licensing and regulatory requirements govern pesticide applications by Maryland arborists?

• A. A Maryland pesticide applicator license (ornamental/structural category) is required for commercial pesticide applications; must follow label directions and reporting.
• B. No license is required for any pesticide applications in Maryland.
• C. Only private homeowners need a license.
• D. Licensing is optional for ornamental uses.

Answer: (A)

In Maryland, applying pesticides as part of a commercial arborist service is regulated, and you must be licensed as a pesticide applicator in the ornamental/structural category. This license verifies you have the training to handle and apply pesticides safely and legally for clients. The big responsibility tied to the license is following the product label, because the label is the legal authority for use. It covers how much to apply, when to apply, where it can be used, required PPE, restricted-entry intervals, and other safety and application rules. There are also regulatory requirements to report certain pesticide use or keep records of applications, depending on the product and context. This combination—licensure for commercial work, strict adherence to label directions, and mandated reporting—governs how Maryland arborists conduct pesticide applications. For private homeowners treating their own property, a different private applicator framework applies, but it does not cover commercial arborist work.