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 ...

Small changes in pH reflect significant shifts in acidity or alkalinity due to the exponential nature of the scale.

Wood ash can benefit some plants, such as tomatoes. Unfortunately, it can pose significant difficulties for blueberries if ...

Most soils have a pH value somewhere between 3.5 and 10. Usually, soil is considered neutral if it has a pH value of 7. If the pH registers higher than 7.5, the soil is considered alkaline.

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 ...