
About Akadama
Tripple Line Hard Akadama (Sun-Dried)

Uncompromising Quality, Trusted Worldwide
Produced with carefully minded natural red soil sourced exclusively from a premium region in Ibaraki Prefecture, this Akadama soil is dried slowly under sunlight and wind in controlled conditions.
Conventional Akadama often lacks structural integrity, and many alternatives that appear hard when dry tend to lose their shape and turn muddy when watered. In contrast, our product maintains its form, resists disintegration, and delivers consistent performance over time.
Its superior hardness helps retain aeration and moisture balance over extended periods.
Key Advantages
Product Specifications
Material | 100% natural red soil from Ibaraki Pref. (no binders or additives) |
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Processing | Slow sun-drying in greenhouse tunnels |
Granule Sizes | SSS (1–2mm) / SS (2–3mm) / S (3–6mm) / M (6–10mm) / L (10–20mm) |
Packaging | Polyethylene bags (bag size: 14 litters) |
Application | Bonsai, succulents, alpine plants, flowering shrubs, ornamental trees, houseplants |
Tripple Line Heat-treated Akadama (Sun-Dried + Heat-Treated)

Enhanced for Professional Horticulture and Export Compliance
Building on our sun-dried Hard Akadama, this premium-grade product is heat-treated at approx. 250°C.
The process reduces microbial risks, increases structural integrity, and meets phytosanitary regulations in markets like Korea and Taiwan.
Key Advantages
Product Specifications
Material | 100% natural red soil from Ibaraki (no binders or additives) |
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Processing | Processing: Rotary kiln heat-treatment of sun-dried Hard Akadama as base material |
Granule Sizes | SSS (1–2mm) / SS (2–3mm) / S (3–6mm) / M (6–10mm) / L (10–20mm) |
Packaging | Polyethylene bags (bag size: 14 litters) |
Application | Premium bonsai, succulents, orchids, houseplants |