Soil labs by state
Missouri
In Missouri, the official homeowner soil-testing route is through University of Missouri Extension and the MU Soil and Plant Testing Laboratory in Columbia. Homeowners can either send samples directly to the lab or work through a local county MU Extension office, and MU publishes both submission instructions and current routine-test pricing online.
Checked against official sources on October 4, 2026. Rules and links change; confirm with the office listed before you act.
- State soil lab
- University of Missouri Extension Soil and Plant Testing Laboratory
- Lab website
- Official page →
- Basic test price
- $15.00 per sample
- Find your county Extension office
- Official page →
Official resources in Missouri
Main official program page for Missouri soil and plant testing services.
Official instructions on where to submit samples, payment options, and county office submission.
Direct-to-lab ordering page with the Columbia mailing/delivery address and routine soil-test price.
Homeowner form used for lawn and garden soil samples sent to the MU lab.
Official county office finder residents can use to locate their local MU Extension office.
Key facts for Missouri
- MU Submit samples: Homeowners may submit soil samples directly to the Columbia lab or through a local county Extension office.
- MU Direct-to-lab page: Direct submissions go to 1100 University Ave, Mumford Hall Room 23, Columbia, MO 65211.
- MU Submit samples: Online credit-card payment is intended only for samples submitted directly to the lab.
- MU Submit samples: Samples submitted through county Extension offices are mailed first to the county agronomist or horticulturalist for comments.
- MU Direct-to-lab page: The regular fertility test is listed at $15.00 per sample.
- MU MP555: The lawns-and-gardens form is for homeowners and small commercial business owners sending samples to the MU lab.
What to do next
- Use MP555 if you are testing a lawn, vegetable garden, or flower garden sample for your home.
- If you want local help interpreting results, submit through your county MU Extension office instead of mailing directly.
- Use the MU county office locations page, then filter or browse to your county before dropping off a sample.
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