Which pH do terracult’s peat and substrates have and how are these measured?

You can find an overview of the pH values for terracult’s peat and substrates here. In principle, one can say that the pH for pure white peat from a high moor is around 3 – 3.5 (measured in CaCl2). The pH of black peat lies between 4.0 – 4.5.

For substrates, the pH can be increased by adding an exact amount of calcium carbonate. In our experience, a pH of 5.5 – 6.5 offers most plants the best conditions, that is, this range is also favorable for the absorption of important micronutrients.