Soil labs by state
Wisconsin
Wisconsin homeowners can use the University of Wisconsin–Madison Soil & Forage Analysis Lab in Madison for lawn and garden soil testing. The most clearly published homeowner workflow is direct mail to the lab using the lawn-and-garden form, while some county Extension offices also publish local drop-off help and shipping assistance.
Checked against official sources on October 4, 2026. Rules and links change; confirm with the office listed before you act.
- State soil lab
- UW Soil & Forage Analysis Lab
- Lab website
- Official page →
- Basic test price
- $30.00 per sample
- Find your county Extension office
- Official page →
Official resources in Wisconsin
Official UW–Madison lab site with lab location, contact information, and links to sample forms and testing pages.
Official homeowner submission form with current routine price, payment instructions, sample size, and Madison mailing address.
UW Extension horticulture page summarizing why to test, what the standard test includes, and where to find forms and mailing directions.
Official University of Wisconsin–Madison Division of Extension county office directory for finding your local Extension office.
Example county Extension page showing local drop-off assistance, sample packaging guidance, and office submission steps.
Key facts for Wisconsin
- Wisconsin’s land-grant soil lab for homeowners is the UW Soil & Forage Analysis Lab in Madison. Source: https://uwlab.soils.wisc.edu/
- The 2025 UW lawn-and-garden submission form lists the routine cost as $30.00 per sample. Source: https://uwlab.soils.wisc.edu/wp-content/uploads/sites/17/2025/07/Lawn-Garden-Form-8-1-25.pdf
- The official lawn-and-garden form says to mail or drop off samples at 4702 University Avenue, Madison, WI 53705. Source: https://uwlab.soils.wisc.edu/wp-content/uploads/sites/17/2025/07/Lawn-Garden-Form-8-1-25.pdf
- The homeowner form requires 1–2 cups of soil and says results may take 14–18 days after the lab receives samples. Source: https://uwlab.soils.wisc.edu/wp-content/uploads/sites/17/2025/07/Lawn-Garden-Form-8-1-25.pdf
- Brown County Extension says residents can bring samples to the county office, where staff help complete the submission form. Source: https://brown.extension.wisc.edu/horticulture/soil-testing/
- Door County Extension publishes both options: mail samples yourself or have the Extension office mail them to the lab. Source: https://door.extension.wisc.edu/horticulture/soil-sampling-homeowners/ and https://door.extension.wisc.edu/files/2022/03/LAWN-AND-GARDEN-SOIL-SAMPLING-instructions.pdf
What to do next
- Download the current Lawn & Garden Soil Submission Form, fill it out completely, and use the crop/landscape details needed for recommendations.
- If you want local drop-off help, find your county office first and confirm that your county currently accepts homeowner soil samples for forwarding.
- Collect a clean 1–2 cup sample from the recommended depth, label the bag clearly, and choose email results if you want the fastest report delivery.
Helpful guides
- How to take a soil sample for a lab test
- University soil labs vs. private labs vs. home kits
- How to read a soil test report
- Soil pH and lime: what your test is telling you