Bone meal, which is exactly what it sounds like, is a good source of calcium and can help raise your soil's pH over time. It is not a quick-fix method and is best used for soils that are only slightly acidic.

Is bone meal acidic or alkaline?

Bone meal fertilizer only works in acidic soil. It's best to only consider this compound if your soil's pH is 7.0 or below. If the soil's pH level is above 7.0, it contains high amounts of calcium.

What is the pH of bone meal?

According to studies reported by Colorado State University, phosphorus from organic fertilizer like bone meal is only available to plants in acidic soil, with a pH level of 7 or lower.