I'm wondering about CP soil acidity, and whether or not it helps them grow or not. Does it just happen to be coincidence that the soil they are in is acidic? Is it important to the plants growth/health that the acidity is a certain pH? Would it harm the plants if the soil was too acidic? Or could more acidic soil enhance growth?
I'm not sure how to prove this and don't have the collection to experiment on my own, but I was wondering if anyone has experimented on this?
Also what if you wanted to somehow artificially make the soil media more acidic? Could you brew decaffinated coffee (assuming that caffine would be harmful/not necessary for the plant to have) with distilled water and overhead water the media (after it's cooled of course)? Would the media retain this pH or would it simply be washed away when you overhead water? Would it be better to load the water tray with the coffee, and let it soak through?
Just some thoughts, comment please.