Kanuma 3 to 6 mm - Bonsai Substrate - 1.5 Lt

The 3 to 6 mm caliber is the most commonly used in most Bonsai, either pure or combined with other components to create specific substrates.


Originating from the Kanuma area (azalea soil in Japan), its main characteristic is having an acidic P.H. and maintaining this acidity for a long period (unlike peat, which is also acidic but becomes neutralized (alkalized with watering), this characteristic is due to Kanuma being acidic due to thermal demineralization, which reduces its alkalizing capacity, ensuring acidity throughout the interval between transplantations.

This soil is ideal to be used pure (or in a very high percentage when combined with other components) for azaleas, rhododendrons, and all species that require acidic pH.

In areas with calcareous water (such as in Southern Portugal), or when the watering water is alkaline, or in species that, although not acidophilic, like slightly acidic soils (bougainvillea, citrus, etc...), we can add a percentage (10 to 15%) to the leafy mixture to facilitate nutrient uptake and avoid chlorosis (such as iron chlorosis - iron deficiency).