How is soil pH classified when it ranges from 1 to less than 7?

Soil pH is classified based on its acidity or alkalinity, with a scale that typically ranges from 0 to 14. A pH value of 7 is considered neutral, indicating a balanced level of acidity and alkalinity. When soil pH ranges from 1 to less than 7, it indicates that the soil is acidic.

Acidic soils have a breadth of pH levels within this range, making them suitable for certain plant species that thrive in lower pH environments. Factors contributing to soil acidity include the presence of organic matter, rainfall, and the nature of the parent material from which the soil is formed. In the context of agriculture and landscaping, understanding soil acidity is critical because it can affect nutrient availability, microbial activity, and overall plant health. Therefore, identifying soil with a pH of less than 7 as acidic allows landscapers and gardeners to make informed decisions about soil amendments and plant selection for optimal growth.