Knowledgebase
how to test soil #929957
Asked April 28, 2026, 7:25 PM EDT
Benton County Oregon
Expert Response
The Master Gardeners help desk at the Benton County Extension office will provide a pH test on your soil at no charge. But we only conduct pH testing.
- Here are some test labs that provide garden packages for home gardeners:
- Simply Soil Testing (just for gardens & landscapes) https://www.simplysoiltesting.com/
- A & L Western Labs (garden packages but also serves commercial farmers) https://allabswest.wordpress.com/
- Western Laboratories, Inc. (garden packages but also serves commercial farmers) https://westernlaboratories.com/
- Farm and garden stores in your area may sell mail-in kits (check places like Wilco, Home Depot etc.) These kits have everything you need to take a sample and mail it in a pre-addressed package. They advertise a quick turnaround.
The extension office is open for soil drop off M-F (9am -4pm)
Benton County Extension Service
4077 SW Research Way, Ste 107
Corvallis, OR.
Hope this helps!