Acid Soil - Soil with a pH less than 7. Most soils east of the Mississippi River and in the Pacific Northwest are acidic. Neutral Soil - Neutral soil has a pH of 7. While not impossible, it is not common to have a soil with a pH of exactly 7. Alkaline Soil - Basic or alkaline soil has a pH greater than 7.
Basic soil is common in drier climates, such as in the southwest United States.
Soil with high salt or sodium levels, which are sometimes found near seashores, are typically very basic. It isn t a fine power or rocky. It is loose, not compacted or difficult to dig into. There are virtually no rocks in the soil. The soil pH is slightly acidic, which is ideal.