Frequently Asked Question

How deep should I sample the soil?

We generally recommend a depth of 12 inches from the surface for most conditions.  We do not recommend removing the surface organic material prior to sample collection. 

For golf courses and turf, a 6 inch sample depth may be more appropriate. 

For deeply rooted crops such as corn, wheat, canola, or alfalfa, it is suggested that the sampling depth be increased to 2 or 3 feet with separate samples collected and composited for each 12-inch increment.