Soil pH is defined as the negative logarithm of the hydrogen ion concentration. The pH scale goes from 0 to 14 with pH 7 as the neutral point. As the amount of hydrogen ions in the soil increases the ...

When talking about how to plant and how to grow plants in the garden, one of the things that comes up repeatedly is the importance of your soil’s level of acidity. And that level is measured in pH.

The pH of a soil refers to its acidity or alkalinity and is a vital factor in plant growth. It's easy to measure and is usually listed numerically on a scale of one to 14. Acid soils have a pH of ...

The myth that pine needles lower soil pH likely arose from the fact that pine needles are acidic when they come off the tree.