The benefits of planting rock wool:Rock wool offers a long list of benefits to cannabis growers. Not only does it keep pathogens from multiplying, it also helps seeds germinate and promotes good drainage.
Sterile:Rock wool cubes are sterile and inorganic. After being exposed to extreme heat, the rock wool arrives at the grower's door clean and ready to use. Since it does not contain any organic matter, rock wool helps protect the root zone from destructive microbes.
Compostable:While they take a long time to decompose, growers can chop up the used chunks as finely as possible and throw them on the compost pile. Over time, the key elements in the basalt will leach into the compost, adding nutrients to your future soil.
Well drained:When you soak rock wool cubes, they become saturated with water, but drain quickly. Each cube contains many small spaces between the fibers, which help to drain water efficiently. Overwatering kills many plants before they even start growing. Wet conditions breed fungal pathogens that can quickly destroy seedlings. Although rock wool cubes are largely immune to microbes, excess water can still suffocate roots and stunt growth. Good ventilation can prevent this from happening.
Great for sprouting:Rock wool cubes provide a safe haven for seeds during germination. By saturating them well, they provide the three key needs needed for successful germination: darkness, moisture, and warmth.
Easy Root Penetration:Sometimes, when seeds are sown in dense, hard soil, they have a hard time taking root. However, they can quickly and easily gain a foothold in rock wool cubes. Young roots easily pass through the gaps between the fibers.
Ease of porting:Once your seedlings look ready to settle in their new home, you'll find it easy to move them directly into soil-filled pots or hydroponic mesh pots. Unlike transplanting from soil, you don't need to take apart the original growing medium or deal with any debris. Just pick up the cube and drop it at its destination.