Weed & Pest

Duties of the Supervisor

The Weed and Pest Supervisor’s job is to control all state and local noxious weeds, respond to infestation complaints, and control noxious weeds on county, state, and interstate roads, right-of-ways, and other easements.

Weed & Pest Department Responsibilities

  • Collect leafy spurge beetles
  • Control noxious weeds
  • Control pocket gophers
  • File records, bills
  • Maintain equipment
  • Maintain spraying licensing

State Noxious Weeds/Declared Pests

  • Canada Thistle
  • Leafy Spurge
  • Perennial Sowthistle
  • Hoary Cress
  • Salt Cedar
  • Purple Loosestrife
  • Absinth Wormwood
  • Gypsy Moth

Local Noxious Weeds

  • Musk Thistle
  • Plumeles Thistle
  • Bull Thistle

2021 Township Spraying Packet

SD Dept of Agriculture/Dept of Natural Resources Merger Information

On August 27, 2020, Governor Noem announced her plan to merge the Department of Agriculture (SDDA) and the Department of Environment and Natural Resources (DENR) into one department – the Department of Agriculture and Natural Resources. On September 8, 2020, DENR Secretary Hunter Roberts became the Interim SDDA Secretary and began the merger process. This document lists some frequently asked questions that have come up resultant from this merger.

SD Ag/DENR Merger FAQs

Emerald Ash Borer Information

The South Dakota Department of Agriculture has put together a website with information about the emerald ash borer. Click here for more information.

Brookings County Weed & Pest Department to Offer Mosquito Spraying

The Brookings County Weed & Pest Department will be offering mosquito spraying for Brookings County residents at a cost of $50 to $100, depending on the size of the area needing to be sprayed.

Residents must complete an application and waiver form that includes pre-payment. One week’s notice is also required. The Application and Waiver can be found here or can be obtained by calling the Brookings County Weed & Pest Department at 605-696-8352.

Any questions can be directed to Brookings County Weed & Pest Supervisor Misty Moser at 605-696-8352.

Spray Notification

Misty Moser Brookings County Weed & Pest Supervisor (605)696-8352

The Brookings County Weed and Pest Department will be spraying State, County, and Township road ditches this spring and summer starting in or around May. The County will be spraying products such as 2,4-D, Tordon and possibly mixtures of them. Depending on the product and rate there will be haying restrictions from zero to thirty days. If you are haying roadsides and want information regarding haying restrictions at that location or have other questions, Please call the Brookings County Weed and Pest Office for more information. Please have the legal description of the property ready so information is correct for the location requested.

Brookings County is an Affirmative Action/Equal Opportunity Employer and offers all benefits, services, education, and employment opportunities without regard for race, color, creed, religion, national origin, ancestry, citizenship, age, gender, or any other category protected by law.

Misty Moser Brookings County Weed & Pest Supervisor



NOTICE IS HEREBY GIVEN this 30th day of  March, 2021 pursuant to SDCL 38-22 as amended to all owners, occupants, agents and public officials in charge of lands in Brookings, County, South Dakota, that they are responsible for the suppression, control, and eradication of noxious weeds and declared pests infestations that may exist on such lands.

Chemical, biological, and / or cultural control methods used for the suppression, control and eradication of noxious weed and declared pest infestations shall be those approved for such purposes by the Brookings County Weed and Pest Supervisor, Agronomy Weed Field Specialist or the South Dakota State University Experiment Station.

Upon failure to observe this notice, the county weed and pest board is required to proceed pursuant to the law and have the noxious weeds or declared pests destroyed by such methods as they may find necessary, the expense of which shall constitute a lien and be entered as a tax against the land, and be collected as other real estate taxes are collected, or by other means as provided by law.

Plant and animals designated as being noxious weeds and declared pests in the state of South Dakota are Absinth Wormwood, Canada Thistle, Hoary Cress, Leafy Spurge, Perennial Sow Thistle, Purple Loosestrife, Salt Cedar, and Gypsy Moth.

In addition, Bull Thistle, Musk Thistle, Plumeless Thistle,  have been approved by the South Dakota Weed and Pest Control Commission as locally Noxious Weeds (indicate noxious weed or declared pest) are subject to the same suppression, control and eradication requirements as the before mentioned plants and animals. 

NOTICE IS HEREBY GIVEN that upon establishing probable cause to believe a noxious weed or declared pest infestation exists upon any property in Brookings County, a representative of the Brookings County Weed and Pest Control board will enter upon said property for the purpose of inspecting and confirming that such infestation actually exists.