edwin norden
Sapling
Any chance you could find some pumice where you are? I too think that you can make a mix with what you have on hand. I do think that pumice is a wonderful substrate if you can find it. It's light and has good retentive qualities.
I have find only like big stones and no small ones. The big ones is in use on human feet. Like a sandpaper
But i havent find eny small ones.
I know it good material