Expanded Shale
I got some expanded shale last Saturday, and I have been doing some research on it. I read from a few sites that it works better than Perlite and Vermiculite. I was wondering if this is true. I put my banana plants in smaller pots and I added a layer of it at the bottom and then I mixed it in with the potting soil. I read that no matter how much water is added it will still retain 30% oxygen. I was wondering anyone else had any experiences with it. I believe it has a neutral pH.
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