Noxious Weeds in Maryland

Weed Control Program

​Noxious Weeds in Maryland ​​

Prohibited noxious weeds are annual, biennial, or perennial plants that the Secretary of Agriculture has designated as having adverse or threatening affects to agricultural production throughout the State. There are currently eight plant species that have been designated as noxious weeds in Maryland. Maryland law requires that these weeds not be allowed to produce seed. There are as follows:

Click here for a copy of Maryland's Noxious Weed Law.

Click here for a copy of Maryland's Noxious Weed Regulations.​

Maryland Weed Control Law​

The MDA Weed Control Program enforces the Maryland Weed Control Law and assists farmers or landowners in the battle against the eight designated noxious weeds.​

The Law requires landowners to eradicate or control noxious weeds on all types of land. Control methods include mowing, cultivating, or treating with an approved herbicide. Each year, MDA enters into an agreement with participating Counties to provide technical assistance to County Weed Control Coordinators and landowners.  

Click here​ for a map depicting which County's currently participate in this partnership. For County Weed Control Coordinator information, please contact your region's Agricultural Inspector noted below. 

Landowner Assistance

For more information on your County's Weed Control program and to report noxious weeds along County or State roads, please contact your County's Weed Coordinator.

For assistance with weed identification, contact your local University of Maryland Extension office at:


If you have questio​ns, comments, need assistance or if you know of a site where noxious weeds are growing, please contact:

  • Upper Shore or other inquiries: contact Jim Calao, Program Administrator, or 410-562-3054
  • Central/Western Maryland: Susi Ponce                                     or 443-591-6970
  • Lower Eastern Shore: Victoria Spice                                           or 667-500-3450
  • Southern Maryland: Andrew Bowles                                         or 667-500-3451

 All calls will be handled confidentially.​

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