How and where to get your garden soil testing in every state | PITH + VIGOR by Rochelle Greayer

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How and where to get your garden soil testing in every state


With only a few exceptions every US state has a university based extension program that operates a soil lab. These soil testing labs can used by both commercial growers and farmers and home gardeners. Most tests are very affordable (~$20 or less) and there are instructions for how to collect and package the samples on each website.

It is common for the service to also include fertilizer or other amendment recommendations based on the test results and the crop or plants you want to grow. These are typically customized by the state (for example, here in New England, there are special requests for those interested in growing blueberries – a popular crop in the region). Your extension may offer other regionally appropriate options.

state by state soil testing guide

Alabama – Auburn University Soil Testing Laboratory

Alaska – University Of Alaska Fairbanks Soil Labs

Arizona – University of Arizona Cooperative Extension

Arkansas – University of Arkansas Soil and Research Laboratory

California – University of California Cooperative Extension (add your county to this search to narrow the list)

Colorado – Colorado State University

Connecticut – University of Connecticut – Soil Testing Program 

Delaware – University of Delaware Soil Program

Florida – University of Florida Cooperative Extension

Georgia – University of Georgia Cooperative Extension

Hawaii – University of Hawaii at Mānoa

Idaho – University of Idaho – Soil Chemical and Physical Analyses

Illinois- University of Illinois Extension – Soil Labs

Indiana- Purdue University Soil Sampling & Testing

Iowa – Iowa State University closed their lab in 2017 (visit this link for alternative labs in nearby states)

Kansas– Kansas State University Agronomy Soil Testing Lab

Kentucky – The University of Kentucky College of Agriculture

Louisiana – Louisiana State University – Soil & Plant Analysis Lab

Maine – The University of Maine – Cooperative Extension

Maryland – University of Maryland Co-Op Ext Soil Testing Services

Massachusetts – University of Massachusetts Soil Testing Program

Michigan – Michigan State University

Minnesota – University of Minnesota – The Soil Laboratory

Mississippi – The Mississippi State University

Missouri – University of Missouri Extension – Soil & Plant Diagnostic Services

Montana – Montana State University Extension – Soil Information and Labs

Nebraska – University of Nebraska-Lincoln – Soil Information and Labs

Nevada – University of Nevada Reno – Environmental Soil Analysis Laboratory (this will forward you to nearby state labs)

New Hampshire – University of New Hampshire Cooperative Extension

New Jersey– Rutgers University Cooperative Extension Office Soil Test Program

New Mexico– New Mexico State University – Soil Labs

New York– Cornell University Cooperative Extension

North Carolina – North Carolina Department of Agriculture – Soil Services

North Dakota– North Dakota State University Soil Lab

Ohio – The Ohio State University – Soil Resources

Oklahoma – Oklahoma State University

Oregon– Oregon State University Central Analytical Laboratory

Pennslyvania – Penn State Soil Testing Services

Rhode Island – University of Rhode Island Soil Program (Use the program at UMass)

South Carolina – Clemson University Cooperative Extension

South Dakota – South Dakota State University – Soil Labs

Tennessee – University of Tennessee Soil, Plant, and Pest Center

Texas – Texas Agrilife Extension Service Soil, Water, and Forage Testing Service

Utah – Utah State University Soil Laboratory

Vermont – University of Vermont Soil Testing

Virginia – Virginia Tech Soil Lab

Washington – Washington State University Soils and Soil Testing

West Virginia – West Virginia University Soil Laboratory

Wisconsin – University of Wisconsin Soil & Plant Analysis Laboratory

Wyoming – University of Wyoming – Soil Laboratory

Updated April 2022
state-by state soil testing guide
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