How does soil pH affect plant health?

Soil pH is a crucial factor in determining plant health because it significantly influences nutrient availability and overall plant growth. Most nutrients required for plant development are available in a specific pH range, typically between 6.0 and 7.5, which is considered optimal for a wide variety of plants. When the soil pH falls outside this range, certain nutrients may become less available. For instance, in acidic soils (low pH), nutrients like phosphorus can become bound to soil particles, rendering them unavailable to plants. Conversely, in alkaline soils (high pH), important micronutrients such as iron and manganese become less soluble, leading to deficiencies that can stunt growth and lead to various health issues in plants.

In addition to nutrient availability, soil pH also affects soil microbial activity and the breakdown of organic matter, both of which are essential for healthy plant growth. Healthy microbial activity enhances nutrient cycling and soil structure, promoting overall plant health. Therefore, understanding and managing soil pH is critical for cultivating robust plants and achieving successful landscaping outcomes.