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Ibaraki Hard Akadama, Fine, 1-3mm

42 reviews
4 items left


  1. Consistent particle size = 1 ~ 3mm
  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
4.9 Based on 42 Reviews
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    Bonsai Tree Ibaraki Hard Akadama, Fine, 1-3mm ReviewBonsai Tree Ibaraki Hard Akadama, Fine, 1-3mm Review

    Excellent Addition to Substrates for Haworthia

    Since using fine grain Japanese Akadama in combination with fine grain Pumice as substrate for my Haworthias, I have noticed a significant reduction in the occurrence of root pests and root rot. The plants look healthier and stronger in general. The Akadama component keeps the necessary moisture around the roots, while the pumice betters aeration to the roots. What I like most about Akadama is that it has a darker colour when wet. This serves as a great indication of when the plant needs to be watered or not, which makes my watering regimen significantly easier.

    Anton M.
    South Africa South Africa
    Bonsai Tree Ibaraki Hard Akadama, Fine, 1-3mm Review

    japanese academia and pumice

    I mixed the Japanese Akadama and Pumice in 50:50 mix and potted up my lithop seedlings. So far they are doing great. This subrate is perfect when excellent drainage is required

    janet p.
    South Africa South Africa
    Bonsai Tree Ibaraki Hard Akadama, Fine, 1-3mm ReviewBonsai Tree Ibaraki Hard Akadama, Fine, 1-3mm Review

    World class service

    Goods came before expected date. Communication was prompt and friendly. Products was as advertised. Bonsai Tree just ticks all the right boxes and will definitely see me again. May you grow from strength to strength.

    Zahier G.
    South Africa South Africa

    Bonsai Tree

    Awesome Zahier. Thanks so much for sharing your experience! I am very happy that we were able to meet and exceed your expectations.

    Bonsai Tree Ibaraki Hard Akadama, Fine, 1-3mm Review

    Akadama fine 1-3mm

    Used it on different Haworthia, Aloe pepe and Euphorbia monadenium ritchiei. Within week small roots formed. Within a months time the Haworthia tulista angel tears roots grew from no roots to about 12cm long. The colour of the plants in the Akadama went from "dull" to a bright green. I am trying it again on my cacti, placed it in bowl on the 25th of September. Will keep you up to date. Thank you very much.

    Leatitia V.
    South Africa South Africa

    Bonsai Tree

    This is great Leatitia! It's so nice to see enthusiasts trying different things and then giving this feedback. It is not only helpful to me, but also to other succulent growers who I am sure will be most grateful for you sharing.



    The akadame works wonder for the trees...

    Freddie V.
    South Africa South Africa