The Latah County Extension staff are happy to help you with information about having your soil tested. We have a soil probe to loan out and provide a collection bag and submission form at no charge. Call to check on availability of the soil probe. After collecting the sample, it will need to be taken to the University of Idaho Soil Analytical Labaoratory. The standard soil fertility test includes pH, nitrogen, phosphorous, potassium, and organic matter and costs $35.
How to take a soil sample:
1. Assemble a clean clean plastic bucket, and a shovel or soil probe. Tools should be stainless steel or aluminum alloy; no iron.
2. Take 8-12 randomly spaced soil samples at a depth of 8-12 inches.
3. Mix samples thoroughly and fill collection bag with 2 cups of composite soil.
4. Fill out the submission form with name, address, and phone. Under “Submitter ID” column, also indicate what you are sampling, i.e., vegetable garden, lawn, flower bed, blueberry bed.
5. Take sample, a $35.00 check payable to “Bursar, University of Idaho,” and submission form to the Analytical Sciences Laboratory, in the Holm Research Center, 2222 W. 6th Street, Moscow (located at the west end of 6th Street; the very last brick building on the road, adjacent to the mall and the sewage treatment plant).
6. Plan on receiving results back from the laboratory in approximately ten days. After receiving the results, contact the Extension office for help in interpretation.
Some additional reading: