Kiryuzuna Bonsai Soil Ideal For Pines & Junipers (You Pick The Size)Our Kiryuzuna bonsai soil is a great choice for Pines, Junipers and other conifer species. It has a similar structure to Akadama but is a little more dense and hard and should last a long time before breaking down in the pot. Mix with other mediums for extra drainage or use neat. This hard grade free draining soil will promote a healthy & vigorous root system and significantly reduce the risk of over watering.