These are natural green volcanic ash stone grains extracted from the Oirase stone quarry.
Tōhōda Stone (Hinai Green®) is a natural stone soil amendment material that adjusts comprehensive soil fertility (chemical, biological, and physical properties). <Organic JAS Standard Compliant Material> 【Features】 ■ Weakly alkaline ■ Porous structure based on silica ■ Establishment of beneficial microorganisms ■ Minerals that easily ionize in response to water *For more details, please visit our website or feel free to contact us.
Inquire About This Product
basic information
Towada Stone (Hinai Green®) was formed 10 million years ago when a volcano erupted on the ocean floor, and the volcanic ash accumulated and solidified on the seabed. It belongs to the category of green tuff, but its characteristics are very unique. Towada Stone (Hinai Green®) exhibits weak alkalinity in aqueous solution, reacts with water to release ionized minerals (enhancing chemical properties), supports beneficial microorganisms in its porous structure (enhancing biological properties), has excellent water retention, and creates a granular structure (enhancing physical properties). *For more details, please visit our website or feel free to contact us.*
Price range
Delivery Time
Applications/Examples of results
【Usage】 ■Vegetables ■Leafy vegetables ■Rice ■Corn ■Strawberries, etc. *For more details, please visit our website or feel free to contact us.
catalog（1）
Download All Catalogs
Company information
Hinai Green® and its related products support the healthy growth of crops. By utilizing the balanced performance of natural materials (chemical, biological, and physical properties), we contribute to the agricultural market's goals of food safety, security, and stability.