Bonsai artists and plant lovers, meet your new best friend for potting mix: Red Lava Rock, also known as Scoria. This isn't just decoration; it's a premium inorganic soil component. The pieces are a medium grain size, roughly between 1/3 and 1/4 of an inch. Why is it awesome? First, it's incredibly porous, which means it provides fantastic drainage and aeration for your tree's roots – preventing root rot is key! Second, its rough surface helps anchor roots and allows for beneficial mycorrhizal fungi to thrive. This bag gives you a hefty 14 pounds (which is about 8 liters) of this volcanic rock. It's unbranded but is exactly what you need to create a well-draining, healthy substrate for your conifers, maples, or any bonsai that hates wet feet. Your trees will thank you.
