GroDan Cubes

Grodan cubes are a type of rockwool growing medium widely used in hydroponic and horticultural applications. Made from molten basalt and limestone, these materials are spun into fibers and compressed into cubes, blocks, or slabs. Grodan cubes are known for their excellent water retention, aeration properties, and inert nature, making them ideal for seed germination, cloning, and plant propagation. 

Key Features:

    •    Optimal Water Retention and Aeration: Grodan cubes maintain a balanced air-to-water ratio, promoting healthy root development.
    •    Sterile and Inert: Being free from pathogens and nutrients, they provide a controlled environment for plant growth.
    •    Versatile Applications: Suitable for various plants, including vegetables, herbs, and ornamental species.
    •    Easy Transplantation: Facilitate seamless transfer of seedlings to larger growing systems or media.

Usage Instructions:

    1.    Preparation: Soak the cubes in pH-adjusted water (pH 5.5) for about 30 minutes before use.
    2.    Seeding/Cloning: Place seeds or cuttings into the pre-formed holes in the cubes.
    3.    Maintenance: Keep the cubes moist but not waterlogged to prevent root rot.
    4.    Transplanting: Once roots emerge from the cubes, transplant them into larger Grodan blocks or other growing media as needed.

Availability in Australia:

Grodan cubes are available through various Australian hydroponic and gardening retailers. For instance, Just Hydroponics offers Grodan Rockwool Cubes in sizes such as 150 x 150 x 150 mm with a hole, suitable for different stages of plant growth. 

Incorporating Grodan cubes into your cultivation practices can enhance seedling success rates and promote robust plant development, making them a valuable tool for both amateur and professional growers.