MISSOURI· UNIVERSITY & EXTENSION LABS
Where to get a soil test in Missouri
A soil test is how you stop guessing at fertilizer and fix the one thing your lawn actually needs. In Missouri, the public program below tests homeowner samples and interprets the results for local soils.
MISSOURI STATE LAB
University of Missouri Soil and Plant Testing Laboratory
MU soil and plant testing laboratory.
Visit the lab & sampling instructions →County drop-off & extension offices
County extension offices across Missouri stock sample forms and, in many cases, accept samples for the state lab. 12 of the most populous counties are listed below; the full directory has one for every county.
University of Missouri Extension, Boone County office
Columbia, MO
University of Missouri Extension, Cass County office
Harrisonville, MO
University of Missouri Extension, Christian County office
Ozark, MO
University of Missouri Extension, Clay County office
Kansas City, MO
University of Missouri Extension, Franklin County office
Union, MO
University of Missouri Extension, Greene County office
Springfield, MO
University of Missouri Extension, Jackson County office
Independence, MO
University of Missouri Extension, Jasper County office
Carthage, MO
University of Missouri Extension, Jefferson County office
Hillsboro, MO
University of Missouri Extension, Platte County office
Platte City, MO
University of Missouri Extension, St. Charles County office
Saint Peters, MO
University of Missouri Extension, St. Louis County office
Saint Louis, MO
Not your county? Find your local office in the full Missouri directory.
How it works
- 01
Get a form and sample the way your lab says to
Pick up a form at a county office or download it from University of Missouri Soil and Plant Testing Laboratory. Where you pull cores and how you mix them decides whether the report means anything, so follow the lab's instructions exactly.
- 02
Send it in
Many county offices accept the sample and route it to the state lab; otherwise mail it in with the form.
- 03
Turn the report into a plan
When results come back, the numbers only matter if they change what you put down. Enter them in the app and it builds the plan.
THE APP · SOIL REPORT ANALYZER
Got your Missouri report back? Analyze it.
Enter your report values in the Lawn Dominator app and pick your lab, and it handles the messy part: units and extraction methods differ by lab, so your numbers get compared against turf targets that match how your lab measured them. Then it helps build the fertilizer plan for your grass type and checks timing against your live soil temperature.
Free to download on iPhone and Android.
Common questions
- Where can I get a soil test in Missouri?
- Missouri's public soil testing is run through University of Missouri Soil and Plant Testing Laboratory. Many county extension offices (listed on this page) stock the sample forms and can help you submit. National mail-in labs like Logan Labs, Ward Laboratories, and Waypoint Analytical are established alternatives.
- How much does a soil test cost in Missouri?
- Fees vary by lab and by which package you choose (basic pH plus phosphorus and potassium, versus expanded panels with organic matter and micronutrients). Check University of Missouri Soil and Plant Testing Laboratory for current pricing before you send a sample; the page linked here is the authority for its own fees.
- How do I turn my Missouri soil test into a fertilizer plan?
- Enter your report values in the Lawn Dominator app and pick your lab so units and extraction method are handled correctly, and it compares your numbers against turf sufficiency targets and helps build the fertilizer plan for your grass type.
Looking for another state? See the national map of soil test labs. University of Missouri Soil and Plant Testing Laboratory is the authority for its own test menu, sampling instructions, fees, and result interpretation.