Kanuma Hard Quality (5-10mm) 
Rectangular Plastic Training Pot 44×35,5×11,5 cm
Black plastic training pot ...
Pumice / Pumice Stone (3-8mm)
21,00€
Pumice in 14L or 10KG bag
Granulometry: 3-8mm
This natural pumice, sourced from cooled lava, offers unbeatable drainage and exceptional aeration while retaining just enough moisture for thriving roots. Its porous texture and featherlight weight make it a perfect ally for a robust and balanced root system, ideal for use on its own for all bonsai species that don’t require excessive water. It can also be mixed with other substrates like akadama.
1 in stock (can be backordered)
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Delivery information
Free delivery from 80€
Standard delivery 2-5 working days
Description
Pumice (pumice stone) is a volcanic substrate highly valued in the art of bonsai for its unique properties, making it a versatile and high-performing choice for a wide variety of species. Here is an exhaustive list of its benefits, with a particular focus on its effect on root branching and the resulting advantages:
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Exceptional drainage : Thanks to its highly porous and irregular structure, pumice quickly drains excess water, preventing stagnation that could harm roots. This optimal drainage encourages roots to branch finely as they explore the substrate, creating a dense and functional network suited to the constraints of a bonsai pot.
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Balanced moisture retention : Despite its excellent drainage, pumice retains a moderate amount of water in its micro-porosities, ensuring consistent hydration between waterings. This well-balanced moisture stimulates the formation of secondary rootlets, promoting abundant branching and better nutrient absorption.
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Superior aeration : Its light, honeycomb-like texture allows for optimal air circulation around the roots. This oxygenation promotes cell division at the root level, leading to finer and denser branching, essential for a vigorous root system capable of supporting the tree’s growth in a confined space.
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Stimulation of Root Branching : Pumice, with its irregular and porous surface, exerts slight mechanical resistance on the roots, encouraging them to subdivide into shorter, more numerous branches rather than elongating excessively. This results in a compact and efficient root system, perfectly suited to the aesthetic and functional needs of bonsai, enhancing anchorage and absorption capacity.
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Lightweight : Its low density reduces the overall weight of the pot, making bonsai handling easier while providing stable support. This lightness does not compromise the substrate’s solidity, allowing roots to expand and branch without excessive compression.
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Neutral pH : With a pH generally around 7, pumice is chemically neutral, making it compatible with nearly all bonsai species, whether they prefer slightly acidic or alkaline conditions. This neutrality supports healthy root growth without altering the balance of absorbed nutrients.
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High durability : Unlike some organic substrates that degrade quickly, pumice is extremely resistant to decomposition. It retains its structure for many years, offering a stable environment for the gradual development of roots and reducing the need for frequent repotting.
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Subtle mineral enrichment : Derived from volcanic lava, pumice contains trace minerals that release slowly, providing a slight nutritional supplement to the roots. This supports healthy branching without relying solely on external fertilizers.
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Natural aesthetic : Its light color (typically gray-white or beige) adds a clean, modern visual touch, highlighting the bonsai while making it easy to monitor the substrate’s moisture level.
Specific Advantage for Roots : Pumice excels at promoting fine, dense, and evenly distributed root branching, a major asset for the health and aesthetics of bonsai. This compact root network maximizes water and nutrient absorption efficiency in the limited volume of a pot, enhancing the tree’s resilience to environmental stress. Abundant branching also improves the tree’s stability in its container and facilitates adjustments during repotting or shaping, while supporting more vigorous and balanced aboveground growth (foliage, branches).
Additional information
| Weight | 10 kg |
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| Dimensions | 50 × 30 × 17 cm |
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