I had a couple of bags of this from when I first got started in bonsai several years ago, so thought I would use it up. It is an "organic" product. I re-potted an older maple in it and have noticed that there is a product in this soil that easily crushes to dust when wet and rubbed between your fingers. Not sure I like that if we are looking for granular, free draining soil. Your thoughts would be appreciated. Thanks!