Hollow Creek Bonsai's Small Akadama Bonsai Soil 14l Bag 1/16"-3/16" Granules Medium Akadama Bonsai Soil 14 liter bag, Heat treated Akadama Bonsai Soil 14 liter bag. This product has a hard shell with a softer interior. It can be crushed easily with your hand. Akadama is not hard like US based baked clay soil components. Great soil for Bonsai or Kusamono