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    Proprietary Technology by Cocomix Exporters

    HRGST: High Root Growth Stimulating Technology

    A revolutionary substrate solution designed to enhance root growth and minimise root diseases in plants, developed in collaboration with leading agronomists worldwide and Sri Lankan experts in the coir industry.

    See It in the Berry Master Range
    HRGST High Root Growth Stimulating Technology logo

    How HRGST Works

    HRGST maintains the optimal moisture level in the upper layer of the coir substrate while the engineered lower layer drains freely. The two layer design balances Water Holding Capacity (WHC) and Air Filled Porosity (AFP) between the top and bottom of the bag.

    Upper Layer: Moisture Retention

    Holds the optimal moisture level around the crown of the plant, encouraging root expansion from the top of the substrate for stronger anchorage and nutrient uptake.

    Bottom Layer: Engineered Drainage

    Specifically engineered using HRGST to move excess water out of the bag quickly, keeping air in the root zone and dramatically reducing the risk of root diseases.

    HRGST open-top grow bags in commercial greenhouse blueberry production

    Stronger Root Expansion

    Optimal moisture in the upper layer encourages roots to expand from the top of the substrate, building a dense, healthy root system.

    Efficient Drainage

    The engineered bottom layer drains excess water quickly, keeping the root zone aerated even under intensive irrigation.

    Reduced Root Disease

    By preventing waterlogging at the base of the bag, HRGST significantly lowers the risk of root diseases in commercial crops.

    Every Root Pattern

    Open-top bags and slabs built with HRGST accommodate vertical and horizontal root types, letting root systems spread freely.

    Healthy blueberry plant growing in an HRGST Vita Blue open-top bag

    Proven in Commercial Production

    Open-top grow bags and grow bag slabs designed using HRGST are specifically engineered to allow root systems to spread freely within the container or grow slab. These designs accommodate various root types and growth patterns, whether vertical or horizontal, ensuring optimal root development and healthy plant growth.

    HRGST powers our Berry Master and Vita Blue ranges used by commercial blueberry, raspberry and strawberry growers across more than 20 export markets.

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