The right substrate for bonsai is as important as the air for the tree to breathe. At our centre in Libčany, we know that ordinary houseplant soil is unsuitable for bonsai because it holds too much water, it clumps and the roots cannot breathe. Above all, a good bonsai substrate must be permeable, airy and stable. At e-bonsai.cz we offer proven mixes and pure Japanese soil that we have used ourselves in growing our ten thousand trees.