Rated 5.00 out of 5 based on 2 customer ratings. Washed Natural expanded cinder rock. (Does not contain any charcoal) obtained from volcanic rocks. Can be mixed with other organic ingredients making it suitable for all purpose gardening.
In this manner, what are cinders in soil?
Cinders are extrusive igneous rocks. Cinders are similar to pumice, which has so many cavities that its low density of 0.641g/cm^3 allows it to float in water. Cinder is typically brown, black, or red depending on its chemical content. A more modern name for cinder is scoria.
Just so, what is the perfect mix of soil?
The Formula for Soil Mix
To create your own perfect soil mix, thoroughly blend 1 part peat or coir, 1 part perlite or vermiculite, one-half part composted bark, and one-half part worm castings. You can grow just about any crop in your indoor garden with this mix.