Originally Posted by Kanana
What about a small part of vermiculite if the mix as it holds water exceptionally well and bananas LOVE water right? I would think maybe 10% vermiculite or more for drier climates?
Yes, plants love vermiculite. But, I wouldn't want vermiculite or perlite in my garden soil. Once upon a time, when I used those ingredients in potting media, I would dispose of the root balls of dead (sometimes live) potted plants in the garbage. Now, with all organic potting media, I just throw the whole thing on my compost pile. It makes my life a little easier.
Sphagnum moss is more water absorbent than vermiculite. You can buy it here: