Soil testing

Basic soil testing analyzes nutrient content and fertility status. Results include fertilizer and lime recommendations. Additional tests are available for nutrient management plans, environmental issues, potting mixes, compost, manure and water usage. Each sample should contain about 1½ cups of dry soil from 6 to 7 inches deep. Consult our soil testing publications for specific instructions. Results are typically provided within two weeks.

Basic soil testing cost is $15 per sample. Soil probes can be borrowed from the Extension office for a period of 7 days to assist with accurate soil sampling. Call to check availability. Results and recommendations take approximately 14 days.

Distance education test proctoring

MU Extension proctors tests for students enrolled in Mizzou Online courses.

Call to schedule an appointment.

Plant and insect identification

Plant and insect samples may be brought to the extension office for identification or disease diagnosis. Recommendations for managing pests, weeds and diseases are provided.

There is a $15 fee for plant or insect identification/diagnosis. Test results are available in approximately 14 days.


MU Extension has publications on agriculture, natural resources, lawn and garden, home and consumer life, nutrition and health, families, community and leadership development, business and careers, emergency management and other topics. Prices vary by publication. 

MU Extension St. Clair County features an information board in the hallway of the Courthouse in Osceola. Various topics are featured throughout the year where selected publications are free to the public.

Canner gauge tests

Testing for dial-type pressure canner lids is available. Dial-type gauges should be tested annually to ensure accuracy and prevent bacterial contamination of preserved foods. (Testing is not necessary for weighted gauges.)

Gauges are tested Monday through Friday, 8:30 a.m. to 4:30 p.m. There is a $1 fee for testing.