For bonsai enthusiasts concerned about the health of their trees, this 6L bag of Algoflash soil is formulated from a precise blend: sphagnum peat, pozzolan, sand, bark compost, wood fiber, and NF U 42-001 fertilizer. The peat fixes nutrients close to the roots, while the pozzolan and sand ensure effective drainage—an essential condition for preventing root asphyxiation. The integrated fertilizer actively supports root development from the moment of planting. Compatible with organic farming and made in France, this soil offers a controlled growing environment to support every stage of your bonsai's life.