Bonsai Soil Particle Size
Beside the need of oxygen for the roots it is also important to let the good bacteria and mycorrhizae intact so the processing of food will take place before being absorbed by the root hairs and send to the leaves for.
Bonsai soil particle size. For example if you are planting a black pine in a rectangular pot 12 x 8 x 2 deep you would start with a layer of 3 8 size soil that s about 1 inch deep. My preferred particle size for drainage material is 1 5 3mm 1 filter sand or starter grade chicken grit no larger. Our proprietary soil mix consists of 33 pine coir pine fines 33 1 4 bonsai block calcined clay and 33 monto clay montmorillonite with a particle size of 1 4 inch for the absolute best soil ingredients for all acid loving plants including your succulents. The medium small mix is similar in size to the medium clay king mix imported from japan.
Generally you will put a shallow layer of soil in the bottom of the pot put your bonsai in the pot and add the same size soil on top of the roots. The ideal size material for most bonsai trees is 1 8 th to 3 8ths inch. The particles used in a bonsai mix should be of sufficient size to allow tiny gaps or air pockets between each particle. For a normal sized bonsai container about 11 wide by 1 or 2 deep the components described above should be screened to provide particles which are about a quarter inch or less in diameter.
Here is an image showing particles that are too small. The particles used in a bonsai mix should be of sufficient size to allow tiny gaps or air pockets between each particle. Mixes for smaller bonsai shohin and mame class plants should be screened to produce particles which are between one eighth and one sixteenth inch. Beside the need of oxygen for the roots it is also important to let the good bacteria mycorrhizae to live so the processing of food will take place before being absorbed by the root hairs and send to the leaves for.
Clay king is great because it breaks down more slowly than many of the other akadama based mixes i ve used. This will result in material that averages inch you want 1 4 sized material in your trees. Medium small bonsai soil akadama and pumice with some lava charcoal and decomposed granite.