Soil Sampling

Is there a place where I can get some soil tested near Los Fresnos or perhaps San Benito?  – Eric G

There are three basic steps involved in obtaining a soil test: 

1) obtain sample bags and instructions,

2) collect composite samples,

3) select the proper test, and complete the information sheet and mail to the Soil, Water, and Forage Testing Laboratory at 345 Heep Center, College Station, TX 77843-2474.

The Cameron County Extension Office will have sample bags & instructions.  (1390 W Expressway 83, San Benito.  On the corner of Expressway 83 and Williams Road)   

Testing fees are:
Routine (R)-$10 per sample
Routine + Micronutrients (Micro)-$15 per sample
Routine + Organic Matter- $20 per sample
Routine + Micro+ Organic Matter $25 per


 The submission form (which I believe is also included with the testing bag) can be found at

To take a soil sample, take a shovel of soil six inches deep from 10 -12 spots around the sampling site.   Mix it up in a bucket.  Place the required amount into the sample bag.

More detailed information can be found at