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Kanuma Hard Quality (5-10mm)
30,00€
Kanuma in 17 L or 6 kg bag
Granulometry: 5-10mm
Sourced from the rich volcanic soils of the Kanuma region, this light, porous clay is a treasure for acid-loving species like azaleas or camellias. With its naturally acidic pH, it creates a perfect environment for thriving roots, while offering impeccable drainage and subtly balanced water retention.
1 in stock (can be backordered)
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Delivery information
Free delivery from 80€
Standard delivery 2-5 working days
Description
The Kanuma substrate, originating from the volcanic soils of the Kanuma region in Japan, is a preferred choice in the art of bonsai, particularly for acid-loving species such as azaleas, camellias, or certain maples. Here is a comprehensive list of its benefits, with a special focus on its impact on root branching and the resulting advantages:
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Naturally acidic pH (5.0 to 6.0) : Kanuma is ideal for bonsais that thrive in acidic conditions. This environment promotes optimal absorption of essential nutrients (such as iron and magnesium), stimulating healthy root growth and encouraging the formation of fine root hairs, thus increasing branching.
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Exceptional drainage : Its porous and lightweight structure allows for rapid water flow, preventing moisture buildup that could suffocate roots. This efficient drainage encourages roots to branch out further to explore the substrate, creating a dense and functional root network suited to small bonsai pots.
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Moderate water retention : While it drains well, Kanuma retains enough moisture to keep roots hydrated between waterings. This consistent yet controlled moisture promotes the development of fine capillary roots, essential for abundant branching and improved resource absorption.
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Optimal aeration : Thanks to its granular and airy texture, Kanuma ensures excellent air circulation around the roots. This oxygenation stimulates cell division at the root hair level, leading to denser branching and a vigorous root system capable of supporting harmonious aboveground growth.
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Stimulation of Root Branching : The porosity and slight friability of Kanuma exert gentle pressure on the roots, encouraging them to subdivide into finer branches rather than elongating. This phenomenon enhances the compactness of the root system—a major asset in the confined space of a bonsai pot—and improves the efficiency of nutrient and water uptake.
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Physical stability : Though softer than Akadama, Kanuma maintains good structural integrity over multiple seasons, providing stable support for developing roots. This stability reduces stress during repotting and allows for gradual, lasting branching.
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Light and aesthetic color : Its pale yellow or beige hue adds a bright, natural visual touch, enhancing the bonsai’s beauty while making it easy to spot dry or wet areas for precise watering.
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Adaptability to specific species : Designed for acid-loving plants, Kanuma meets the precise needs of these bonsais, optimizing their overall health. A healthy plant develops a more robust and branched root system, translating into greater resilience and longevity.
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Natural volcanic origin : Derived from volcanic deposits, Kanuma is rich in minerals that release slowly, nourishing roots without requiring excessive fertilization. This subtle nourishment supports healthy, balanced branching.
Specific Advantage for Roots : Kanuma excels at promoting fine, dense root branching, particularly beneficial for acid-loving bonsais. This compact, efficient root network maximizes nutrient and water uptake in limited space, strengthening the tree’s stability and its ability to support dense foliage or abundant blooms (such as in azaleas). Increased branching also means better resource distribution, reducing the risk of weak or underdeveloped root zones and facilitating future shaping or repotting.
In summary, using Kanuma as a substrate in bonsai art provides a tailored environment for suitable species, with more branched, healthier, and better-equipped roots to support the tree’s beauty and longevity. It’s an indispensable ally for bonsaïka seeking to blend performance and aesthetics.
Additional information
| Weight | 6,5 kg |
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| Dimensions | 50 × 30 × 17 cm |
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