Soil Testing Services

Trusted Analytics & Recommendations to Help You Grow

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. 

WE ARE ACCEPTING SAMPLES BOTH IN-PERSON AND BY MAIL!

*PLEASE NOTE: Effective April 1, 2026 our prices have been increased.

Sample Drop-Off Options

• Soil samples may be dropped off in the blue bins outside Barton 206, Monday–Friday, 8:00 a.m.–5:00 p.m. Blank submission forms are available at this location.
• Samples may also be dropped off at our 24/7 outdoor drop box located in the Sage Way parking lot, just to the right of Barton Hall (see below for the map). Due to weather conditions, blank submission forms are not available at this outdoor location, so please bring a completed form from our website.

In-Person Assistance
If you need in-person assistance, our lab staff is available at the times listed below. If you need in person assistance outside of these time please call or email us to set up a time. 

Tuesday's: 10am-1pm
Wednesday's: 1:30pm-5:30pm
Friday's: 1:30pm-5:30pm

If you are mailing in sample(s), please send to: 
UNH Extension 
Soil Testing Service 
Barton Hall B206 
34 Sage Way Durham, NH 03824

Turnaround time for soil testing is approximately three weeks from the time we receive the sample(s). Thank you for your patience. For questions, please send an email to soil.testing@unh.edu or leave a message  at (603)-862-0509.

**Our new drop-box is located at the front of the Sage Way visitor parking lot just to the right of Barton Hall. This drop-box is for soil samples only. Due to weather, blank submission forms are not available here. All insect and plant disease samples must be sent by mail or dropped off in person during regular business hours.
 

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

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