South Dakota: Soil labs by state

South Dakota State University Extension says SDSU no longer offers commercial soil testing for homeowners and instead points South Dakotans to nearby state or private laboratories. For routine homeowner samples, the official SDSU soil-testing page lists the University of Minnesota Soil Testing Laboratory as a neighboring state lab and tells residents to contact the chosen lab about submission details, charges, and recommendations. ([extension.sdstate.edu](https://extension.sdstate.edu/sites/default/files/2025-01/P-00082.pdf))

Checked against official sources on October 4, 2026. Rules and links change; confirm with the office listed before you act.

Official resources in South Dakota

SDSU Extension: Soil Testing Labs

Official SDSU Extension page listing nearby state and private soil-testing labs for South Dakota crop producers, gardeners, and homeowners.

SDSU Extension: Fertilizing Gardens in South Dakota

SDSU Extension publication explaining that SDSU no longer offers commercial testing and directing gardeners to the soil-testing labs page.

University of Minnesota Soil Testing Laboratory: Lawn & Garden

Official lab page with homeowner sample submission steps, mailing address, drop-off option, and current lawn/garden test prices.

University of Minnesota Soil Testing Laboratory

Official lab homepage with hours, turnaround estimate, and general delivery options for mailed or dropped-off samples.

SDSU Extension: About / County Offices

Official SDSU Extension page listing county and regional offices across South Dakota.

Key facts for South Dakota

SDSU Extension says South Dakota State University no longer offers commercial soil testing. ([extension.sdstate.edu](https://extension.sdstate.edu/sites/default/files/2025-01/P-00082.pdf))
SDSU’s soil-testing page tells homeowners to contact the laboratory they choose about sample submission, charges, and recommendations. ([extension.sdstate.edu](https://extension.sdstate.edu/soil-testing-labs))
The UMN Lawn & Garden page says homeowners can mail samples with payment and a request sheet to the lab in St. Paul. ([soiltest.cfans.umn.edu](https://soiltest.cfans.umn.edu/testing-services/lawn-garden))
The same UMN page says samples may also be dropped off in person at the lab on Dudley Avenue. ([soiltest.cfans.umn.edu](https://soiltest.cfans.umn.edu/testing-services/lawn-garden))
UMN’s Lawn & Garden Regular Test is published at $22 per sample, effective January 1-December 31, 2026. ([soiltest.cfans.umn.edu](https://soiltest.cfans.umn.edu/testing-services/lawn-garden))
SDSU Extension’s About page lists county offices throughout South Dakota for local Extension contact information. ([extension.sdstate.edu](https://extension.sdstate.edu/about))

What to do next

Start on SDSU Extension’s soil-testing labs page, then pick a lab and follow that lab’s own submission instructions. ([extension.sdstate.edu](https://extension.sdstate.edu/soil-testing-labs))
If you use UMN for a home lawn or garden sample, download the Lawn & Garden request sheet, send about 2-3 cups of soil, and include payment. ([soiltest.cfans.umn.edu](https://soiltest.cfans.umn.edu/testing-services/lawn-garden))
Use the SDSU Extension county offices page to find your local office if you want local Extension help before sampling. ([extension.sdstate.edu](https://extension.sdstate.edu/about))

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