Acid soils have a pH of below seven, neutral is pH7 and alkaline is above seven. Loamy soil - often seen as the ultimate garden soil because most plants will grow in it, this is brown and crumbly ...
From pH 7 to 0 the soil is increasingly more acidic and from pH 7 to 14 the soil is increasingly more alkaline or basic. Soil pH provides various clues about soil properties and is easily determined.