This is a follow up.from.our previous post – Making good soil – organic matter. As we said in that post, making good soil requires three primary factors – good organic matter composition, texture and pH.
In short, pH is the acidity ( or alkalinity) of the soil. Differing plants can survive in differing pH levels, with some plants being able to survive in a wide range of pH to very specific limits. Plants that can survive in pH on the lower end of the pH scale would be considered being able to survive in acidic soils while those at the higher end would be alkaline soils. Those that can survive in soils in the middle would be considered neutral. The pH scale ranges from 0-14.

That’s all very well and good I hear you say, but how can I make my soil to a different pH? And to you I say ‘Good question’.
Soil acidity can be increased (that is go backwards on the pH scale) by adding manure or compost. If the natural way isn’t your thing you could also add powdered sulphur or iron chelates. If you go down this avenue then please be aware of how much to use, as using to much could set the pH too far into the acidic scale. If may also alter the chemistry of the soil in irreversible ways.
Soil alkalinity can be increased (that is go forwards on the pH scale) by adding various sorts of lime (that can be purchased from local gardening stores), wood ash or even baking soda. As with acidity, ensuring you get the right amount is important and you should test your soil pH before, during and after.
All in all, ensure you know what the optimal pH is for growth of plants that you are planting and adjust accordingly.


