Increases soils physical quality By its shape and its absorbent properties, charcoal will help stabilize soil humidity and texture. pH Charcoal has a pH of around 8.5. Absorbing properties Not only does charcoal absorb excess humidity, but also some toxic elements which may be present in the soil. Antioxidant Prevents root-rot. Porosity Charcoal may help attain proper porosity levels in soil mixes.

Use

Soil mix
Either mixed with potting soil, compost or peat moss, charcoal is useful in lightening the soil and bringing out all its benefits.

Terrariums
Due to its absorbing properties, charcoal is used as a water reservoir, an odour absorbent and at in the same time prevents rotting of the roots. Charcoal is usually deposited on top of small rocks in order to help drainage.

Orchids
All orchids lovers around the world have discovered the virtues of charcoal through most soil mixes.

African violets
Its has been used by many African violet lovers since carbon is useful for this particular plant. A fine granular size is added to the soilless mix in order to stabilize the humidity level and prevent it from fluctuating.

Lawn
Fine charcoal powder used on lawns (golf) absorbs and eliminates excess amounts of fertilizer and chemicals present in the soil.

Transplanting trees
Before transplanting a tree, you may place a few charcoal pieces at bottom of hole. It will absorb and purify stagnant water.

Granulometry

Fine size
Sizes varying between 1/16 and 1/4 inch
Horticultural mix
African violets

Medium size
Sizes varying between 1/4 and 3/4 inch
Horticultural mix
Orchids
Terrariums

Large size
Sizes varying between 3/4 and 2 inches
Terrariums
Bottom of hole-less containers
Tree planting

Chemical analysis

Carbon	75 - 90%
Oxygen	5.5 - 20.0%
Hydrogen	1.5 - 3.5%
Nitrogen	0.01 - 0.05%
K	2,400 - 9,400 mg/kg
Ca	9,000 - 32,000 mg/kg
Mg	1,200 - 3400 mg/kg
Porosity	80 - 94%
pH	8.5
Reducing agent (antioxidant)