• A clay-like soil of volcanic origin.
• pH neutral
• Degrades in 2-3 years.
• Absorbs water very well and stores ions.
• Provides perfect drainage.
• Contains no nutrients or trace elements.
• Optimal manure regulation possible.
• For both deciduous trees and conifers.

Akadama is a type of volcanic soil widely used in bonsai cultivation. It comes in two forms: hard akadama and baked akadama. It is a volcanic clay soil that is well draining and has a high mineral content.

Bonsai Plaza has Akadama in 6 types of packaging, below in order of grain size:

All Akadama types degrade over time and needs to be replaced periodically. Our Double Line hard akadama requires less frequent replacement than other grades of hard akadama and the baked akadama is technically the preferred choice for bonsai over regular hard akadama because it is sterilized and more durable and retains moisture better. 

To use akadama in bonsai, you can mix it with other soil components. Akadama is often mixed at a ratio of about 70% akadama to 30% other components, such as pumice or lava rock to create a more permeable mix, but can also be used neat. The ratio of akadama to other components depends on the specific type of tree you are growing and the specific conditions in your yard.

When repotting your bonsai, make sure to remove the old soil carefully and carefully trim the roots before repotting the new akadama mixture. Be sure to water the tree well after repotting.