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Japanese Akadama, Small, 3-5mm

39 reviews
10 items left


  1. Consistent particle size = 3 ~ 5mm
  2. High quality Ibaraki brand akadama
  3. Hard type (retains shape longest)
  4. Exclusively imported from Japan by Bonsai Tree.
  5. Available in 2L bag, 5L bag and 14L bags.


Akadama is a granular volcanic clay-like (although it is not clay) mineral which occurs naturally in Japan. It has been extensively used in Japan for many years as a growing medium for bonsai trees and other container-grown plants. It has many unique qualities, one of which is that when it is wet it has a darker colour so indicates when watering is needed. Akadama is unique as a growing medium and is sought after due to its ability for water retention and nutrients due to its high CEC value. However at the same time it provides porosity and free drainage.


Aquascaping and Shrimp

  1. Assists in maintaining tank equilibrium and stability.
  2. Safely buffers pH and keeps it stable for up to 3 years.
  3. No initial ammonia spike.
  4. A natural product which does not leach anything into the water.
  5. Usually FINE or SMALL particle size is used for this application.


  1. Produces a proliferation of feeder roots system which are able to support highly ramified trees.
  2. Has good CEC value, providing steady release of nutrients to the plant. 
  3. Great for rooting all forms of cuttings.
  4. Often combined with equivalent size pumice to add to structure and drainage.
  5. Usually FINE akadama only used for small trees. SMALL akadama for medium and large trees with MEDIUM akadama for drainage layer.


  1. Promotes exceptional, healthy growth and leaf colour saturation.
  2. Great for rooting a variety of succulent species.
  3. Usually FINE or SMALL particle size mixed with equivalent size pumice is used.
See other sizes of akadama available from us
Customer Reviews
5.0 Based on 39 Reviews
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Filter Reviews:
    Hannes H.
    South Africa South Africa

    It's of good quality and work wonderful. It doesn't break down easily even with our freezing temperatures in winter.

    bets d.
    South Africa South Africa
    Bets de Jager

    Effective and fast service after ordering on line. It is a pleasure to do bussiness with you

    Susanne G.
    South Africa South Africa
    The best

    will re-pot all my bonsai into this medium - mixed with pumice of course Service is out of this world too!

    Jacque O.
    South Africa South Africa
    Fit for purpose

    I use the product in a way it was not intended. I use it in Shrimp tanks and it works perfectly for what I need. The product is fantastic but the service I received was even better. Best customer service ever. I loved the experience.

    Bonsai Tree

    Thank you Jacque! We love to hear this and we always do our best to render the best possible service we can.

    Johannes O.
    South Africa South Africa

    I am using the Akadama for my Haworthias and they are doing very well in the medium. At the moment, hot summer, the smaller 5 cm pots takes about 3 days to dry out and the larger 12cm pots take about 5 days to dry out.

    Bonsai Tree

    Thanks for that valuable information Johannes. Perhaps you can add to future reviews some photos of your Haworthia you have planted in the Akadama. If you want faster drying you may want to include Pumice in equal portions to Akadama.