Content by Philip Rozeboom
Dectes Stem Borer in South Dakota Sunflowers
Factsheet covering Dectes stem borer in sunflowers.
West Nile Virus Update: October 16, 2025
As of October 16, 2025, the South Dakota Department of Health reported 86 human cases of West Nile virus from Aurora, Beadle, Bon Homme, Brookings, Brown, Charles Mix, Clay, Codington, Corson, Douglas, Grant, Gregory, Haakon, Hamlin, Hand, Hughes, Hutchison, Hyde, Lawrence, Lincoln, Marshall, Meade, Miner, Minnehaha, Pennington, Roberts, Sanborn, Spink, Stanley, Todd, Union, Walworth, and Yankton counties.
Commercial Applicator Training @ Ft. Pierre
SDSU Extension will host commercial applicator training in Ft. Pierre at the AmericInn by Wyndham (312 Island Dr, Ft. Pierre SD 57532) on February 26, 2026, from 8:30 a.m. - 4:00 p.m. CST.
Commercial Applicator Training @ Brookings
SDSU Extension will host commercial applicator training in Brookings at McCrory Gardens (631 22nd Ave, Brookings, SD 57006) on February 5, 2026, from 8:30 a.m. - 4:00 p.m. CST.
Commercial Applicator Training @ Aberdeen
SDSU Extension will host commercial applicator training in Aberdeen at the Dakota Event Center (720 Lamont St S, Aberdeen, SD 57401) on February 3, 2026, from 8:30 a.m. - 4:00 p.m. CST.
Commercial Applicator Training @ Mitchell
SDSU Extension will host commercial applicator training in Mitchell at the Highland Conference Center (2000 Highland Way, Mitchell, SD 57301) on January 29, 2026, from 8:30 a.m. - 4:00 p.m. CST.
Commercial Applicator Training @ Rapid City
SDSU Extension will host commercial applicator training in Rapid City at the DoubleTree by Hilton (505 N 5th St, Rapid City, SD 57701) on January 27, 2026, from 9:00 a.m. - 4:00 p.m. MT.
Commercial Applicator Training @ Sioux Falls Ag Expo
SDSU Extension will host commercial applicator training during the Sioux Falls Ag Expo at the Sioux Falls Convention Center (1201 N W Ave, Sioux Falls SD 57104) on January 15, 2026, from 8:00 a.m. - 1:00 p.m. CST.
Perennial Weed Control in Lawns and Turf With Fall Herbicide Applications
Early fall is great time to control perennial weeds in lawns, including Wild violet, Creeping Bellflower, Ground Ivy, and Canada Thistle. Learn some expert tips selecting the right herbicides to manage these difficult-to-control weeds this fall.
Yellowjackets: Swarming decaying produce or garbage near you
Fall is here, and if you have a garden, fruit trees, or outdoor dumpsters, you are likely to encounter yellowjackets in search of food. Learn some expert tips to avoid getting stung this fall.