Soil Testing Services

  • rake in the garden

The soil testing lab is open!

UNH Cooperative Extension provides soil analysis and fertilizer recommendations to farmers, homeowners and researchers. Recommendations are based on the latest research and are specific to the crop being grown. 

The cost per sample varies depending upon the test you choose.

Detailed information about the many available testing options, prices, forms, and instructions for collecting and submitting your soil sample can be found on the Test Your Soil page.

Update (10/25/21)

The lab will only be accepting samples by mail until further notice. Your safety and the safety of our students, faculty and staff are our highest priority. 

Please do NOT drop off a sample to the Durham campus. For more information, and to access our soil testing forms please visit the links below. 

Turnaround time for soil testing is three weeks from the time we receive the sample(s). For questions, please send an email to or leave a message for Shyloh Favreau at (603) 862-3200

Please mail all samples to:
UNH Cooperative Extension Soil Lab
Spaulding Hall - Room G28
38 Academic Way
Durham, NH 03824

Frequently asked questions
Location, Hours and contact information
Soil Testing Form


Cooperative Extension’s soil testing service dates back to 2005. The number of samples we process averages more than 3,000 a year. The following list ... Learn More
All forms needed for soil testing. 
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In addition to the standard analyses, soil tests may be customized to meet your individual testing needs.  At the link below, you will find a complete... Learn More

Wood ash has a long history of use in New England. Our Yankee ancestors used wood ash to make lye for soaps, to clean glas... Learn More
Lead is a naturally occurring element that is present in all soils at very low concentrations of less than 50 parts per million (ppm). Elevated levels... Learn More
Animal manures and animal manure-based composts are rich in plant nutrients such as Nitrogen (N), Phosphorous (P) and Potassium (K) and provide organi... Learn More


We have recently updated the prices of the soil & tissue tests offered by UNH Extension. We continually work to keep the program as affordable as ... Learn More
Fall soil testing gives you time to adjust soil pH before next year’s growing season
Fall soil testing gives you time to adjust soil pH before next year’s growing season Learn More
Given the way this winter has gone so far, it’s possible the ground will thaw soon if it hasn’t already. That gives gardeners a prime opportunity to&n... Learn More