What pH value indicates an acidic soil?

A soil pH value below 7.0 indicates an acidic condition. Soil pH is measured on a scale of 0 to 14, where 7.0 is considered neutral. Values lower than 7.0 reflect increasing acidity, with lower numbers indicating stronger acidity. This is significant for plant health since many plants thrive in slightly acidic to neutral soils, often preferring a pH range of 6.0 to 7.0. As the pH drops below 7.0, nutrient availability can change, impacting plant growth and development. Understanding soil pH is crucial for horticulture, as it affects nutrient uptake and microbial activity in the soil, which are vital for healthy plant growth.