I was reading that adding calcium supplements to your soil can lower the pH level, and as peppers like acidic soil, you should be careful with how much you add. So I decided to see if there was a source of calcium that actually raised pH levels, and discovered one: calcium sulfate dihydrate, otherwise known as gypsum or plaster of paris. Great, I thought, except that I then realised that when it dries, it tends to make a pretty hard substance and started thinking that maybe this would not be such a great thing to put around plant roots.
Has anyone on here had any experience of using gypsum as a calcium supplement for plants? Is there a way to use it safely?
Has anyone on here had any experience of using gypsum as a calcium supplement for plants? Is there a way to use it safely?