At this late summer, it’s time for me to prepare the materials needed for my bonsai repotting at the end of this year. I already found the bonsai pots for the repotting project. Now I need the bonsai soil for my variety of bonsai trees. My bonsai trees cover most of the popular ones including outdoor conifer, outdoor deciduous and indoor tropical/subtropical bonsai trees. Some of them already have out-bounded roots and needs repotting.
The bonsai soil is essential for the health of the bonsai tree. It’s as important as the sunlight to the tree. The bonsai soil provides the nutrition and water to the tree so it stays vigorous and healthy. Good quality bonsai soil mixture requires good water retention, good water drainage and good aeration. Organic soils alone or normal garden soil are poor quality bonsai soil as they hardens easily when it gets dry. That doesn’t supply enough water and nutrition to the bonsai tree, and actually, it’s harmful to the tree.
To repot my bonsai trees, I use both already-mixer bonsai soil and the bonsai soil I mix myself depending on the species of the tree. Either type of bonsai soil needs me to look for them locally or online. Our local garden center only carries pumice. Other than that, I don’t find other bonsai soil mixing elements. I am happy to find the online shop that carries everything I need, both the already-mixer bonsai soil and akadama soil and lava rock. They also sell small accessories that repotting needs such as bonsai sieves and the mesh cover for the drainage holes of the bonsai pots.
Normal, the smaller the bonsai pot is, the finer grain of the bonsai soil mixture is required. I have several small, young bonsai trees that need fine grain bonsai soil mixture. I am glad I can find them at this online bonsai shop. Their bonsai conifer soil mix and tropical and sub-tropical mix bonsai soil are very fine but have good water retention and drainage abilities. They are great for my little juniper and young Hawaiian umbrella bonsai trees. For small pots of bonsai trees, this is perfect and convenient because it’s very hard to find finely ground bonsai soil mixtures.
I also need akadama soil and lava rock for my own mixture of bonsai soil. These two items are essential for the water retention and aeration. Akadama soil can only be found online. This online shop carries good quality small grain akadama soil imported from Japan at good prices. Their lava rocks too, are small granules that will absorb up to 40% of its weight in water. Small lava rock (1/4 inch) is the best “sand” component around because it is “sharp” and has very irregular surfaces.
From this online bonsai shop, I collect all of the bonsai soil I need for my bonsai repotting later this year. They are very good quality at reasonable price. I am ready for my project.