Rock wool offers a long list of benefits to hemp growers. Not only does it prevent pathogens from multiplying, but it helps seeds germinate and facilitates good drainage.Sterile
Rock wool cubes are sterile and inorganic. After being exposed to extreme heat, Rock wool arrives at a grower’s doorstep clean and ready for use. Because it doesn't contain any organic matter, Rock wool helps to protect the root zone against damaging microbes.
Compostable
Although they take a long time to break down, growers can shred their used blocks down as finely as possible and throw them onto the compost pile. Over time, key elements within basalt rock will leach into the compost and add a nutritional kick to your future soil.
Good drainage
Rock wool cubes become saturated with water when you soak them, but it quickly drains away. Each cube contains many small spaces between the fibres that help to effectively drain water. Overwatering kills many grows before they even get started. Damp conditions can foster fungal pathogens that quickly destroy seedlings. Although Rockwool cubes are largely safe from microbes, excess water can still suffocate roots and hamper growth. Good aeration stops this from happening.
Great for germination
Rock wool cubes provide a haven for seeds during germination. By keeping them sufficiently saturated, they provide the three key demands required for successful germination: darkness, moisture, and warmth.
Easy Root Penetration
Sometimes seeds struggle to become established when sown in compact and hard soils. However, they establish themselves quickly and easily within Rockwool cubes. The young roots easily pass through the gaps between the fibres.
Easy To Transplant
Once your seedling looks ready for a new home, you’ll find it incredibly easy to move it directly into a pot full of soil or a hydroponic net pot. Unlike transplanting from soil, you don’t need to break apart the initial growing medium or deal with any mess. Simply pick up the cube and slot it into its destination.