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Horticultural charcoal,or inactive carbon, is charcoal in its purest form. Its an organic material manufactured through a process known as pyrolysis. It is a media additive that can be addedto any pottingmix (bark, coco coir, terrarium or terrestrial potting soil mix and others).
Benefits of Horticultural Charcoal
The size of this charcoal is perfect for the majority of orchid mixes for small to large fine rooted orchids. The particle size of this charcoal can very from1/4 to 1 inches. Charcoal is not finely graded and some smaller and larger pieces may be mixed in. If used for finer plants and medium, you can easily crush the particles into smaller sizes.