Weed and Pest Department

SupervisorStop Thistles Now
Steve Molengraaf

Weed Shed Building
1221 10th St. NW
Watertown, SD 57201

Mailing Address
14 1st Ave. SE
Watertown, SD 57201

Phone (605)882-5386 Office
Phone (605)882-6255 Alternate Number
Email Email Weed/Pest Department

Hours of Operation 8:00 A.M. to 4:30 P.M.

The Weed and Pest Superintendent’s job is to control all state and local noxious weeds; respond to infestation complaints; input and recommend control measures; and control noxious weeds on county, state, and interstate roads, right-of-ways, and other easements. Distribute flea beetles for the control of leafy spurge and mapping the distribution.

State Noxious Weeds

Local Noxious

Public Notices

2022 Spray Notification 

Notice of Responsibility to Control Noxious Weeds and Declared Pests – 2022 


February 23, 2022 Meeting Agenda 

Weed Board Members

Jim Thyen

Bret Henricks

Arlen Boehnke

Chris Coplan

Jon Kahnke

Ron Moehring

Liaison – Charlie Waterman

Helpful Links

South Dakota Weed & Pest

SDSU Weed Management

SD Department of Agriculture

iGrow Noxious Weed Control