A bonsai's world is confined to the modest quantity of soil it calls home. In this microcosm, the tree's existence hinges on its ability to absorb water, nutrients, and gases from the soil. Therefore, the choice of bonsai soil plays a pivotal role in determining the tree's health and vitality. Regrettably, we've encountered many lacklustre and feeble trees that have been ensconced in subpar (often organic) bonsai soils from common garden centres.
Essential Soil Characteristics
A high-quality bonsai soil must possess several key attributes:
- Optimal Water Retention: The soil should have the capacity to retain enough water to sustain the bonsai between watering sessions.
- Effective Drainage: Excess water must swiftly exit the pot. Soils that hold onto water excessively become waterlogged, lack aeration, and may accumulate harmful salts.
- Adequate Aeration: Particles in the soil mix should be of a size that allows small air gaps between them. Adequate oxygen access is vital for root health.
- An inorganic soil with well-structured particles enables rapid water drainage and continuous air circulation. Conversely, a compacted organic soil devoid of structure inhibits aeration and drainage, resulting in an ailing tree.
Akadama: The Japanese Secret
Akadama, a Japanese baked clay specially crafted for bonsai, is revered in the bonsai community. Though primarily accessible from bonsai nurseries, its unmatched quality justifies the search. The 'Double Red Line' grade, while pricier, is renowned for its superior durability. Many Japanese bonsai Masters and enthusiasts favour Akadama for its availability and affordability in Japan.
A Word of Caution
While Akadama is esteemed, using it in isolation can lead to disintegration within 1 or 2 years. This underscores the importance of pairing it with volcanic components like pumice or lava to maintain soil structure. Volcanic rock, more robust than Akadama, resists breakdown over time. In select cases, bark can be introduced to enhance water retention without compromising drainage.
Our Expert Recommendation
For an all-encompassing soil solution, we propose our proprietary blend of Akadama, Pumice, and Lava rock. This thoughtfully concocted mixture caters to a broad spectrum of bonsai trees, making it an excellent choice for beginners.
Discover the essence of quality soil at Zero Bonsai and embark on a journey towards thriving, resilient bonsai trees.
Happy Bonsai Cultivating!
