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We are in January and I think it is important to review the different substrates I use in bonsai, in order to prepare for future repotting.
The video starts with an introduction that explains the importance of choosing the right substrate for growing bonsai.
I present the advantages of using pumice as a substrate. It is a light, porous and mineral-rich rock, which makes it ideal for growing, as it allows good drainage and aeration of the tree's roots.
I will then discuss two substrates that are often neglected and decried by some in the cultivation of trees in pots: pozzolan and pine bark.
Pozzolan is a volcanic rock rich in silicon, which helps strengthen the tree's roots. Pine bark has a pH similar to that of the pine's native soil, making it an ideal substrate.
Coir, another substrate not often used in bonsai cultivation, is a sustainable and environmentally friendly substrate that is also rich in minerals and retains water well. This makes it an ideal substrate for growing.
Finally, I present different substrate mixes that can be used in cultivation and depending on the species. Different combinations of substrates are possible, I explain the advantages and disadvantages of each mixture.
In conclusion of the video, I stress the importance of choosing the right substrate for growing a bonsai tree and how it can affect the health and growth of the tree. I encourage you to experiment with different substrates and find the one that works best for your trees and your region.