We have an average _total_ snowfall of 2.5 meters. Akadama is a premium bonsai soil used by Japanese master gardeners. It is very similar to Akadama in its structure and will allow roots to grow through it in the same fashion Akadama does. Old and larger conifers, once every 2-5 years. Depending on where you live, find a soil that fits your needs, and be happy with what works for you. Shohin are repotted once a year. I use less akadama on the tree in training (25% or less). So if you live in an area comparable to the Japanese climate akadama might be your choice, or maybe you find another source better suited (both practically and economically). Soil For Your Red Maple Bonsai. Satsuki/Azaleas: 100% with a little charcoal (In a dry summer climate such as South or Western Australia 5 - 10% Sphagnum Moss may be added.) - Colin Lewis, I have experience of using turface, seramis, cat litter on my own trees and experience of a wide range of alternatives used by clients on their Bonsai. But akadama is not doing it´s job for me. Very strong healthy growth and good flower production have been recorded to date. The Super Fine Grades of Akadama and Kanuma can be used for cuttings, either combined with River/Propagating Sand 50/50 or on its own. I had to look up kanuma soil, and from description it sounds good. To obtain a substitute for Akadama soil stably securing soil of soil quality like Akadama soil in heavy usage as soil for flowerpots and planters of home gardening. The soil microcosms were incubated at 30°C with shaking at 120 rpm for 21 days. - Harry Harrington, I mostly use sphagnum peat (not to be confused with the fresh mosses used for air layering i.e.) But I soaked it over night in water, and although the outside of the particles dissolved to color the water reddish, it left small grit in its wake. Tochigi Prefecture, Japan), Andosol (Kanuma City, Tochigi Prefecture, Japan) and Kanuma soil (Kanuma City, Tochigi Prefecture, Japan). 4. Bonsai classes are also available. Yes, I use akadama for all my trees. Some turface, lava and/or pumice, plus some organic (to create a 'living' medium) and plenty of coarse sand to ensure adequate drainage. But I firmly believe, as do an increasing number of people over the past decade, that Akadama does not realize the true potential, health and vigor of a Bonsai or in many cases, is the underlying cause of weakness, susceptibility to fungal or insect attack or even death (in irregularly repotted trees). So I go two parts Akadama/Kanuma to one part everything else. Trees grown in pure Akadama seem to require repotting less often than those grown in other purely mineral soils (see 4, below). This means that extra care must be taken when working a lava-rich soil between the roots. Red Pine: (1) Akadama 6 parts, CRS 2 parts, Japanese Black Soil or Coco Peat 2 parts. Inorganic Soil Components Part 2 Akadama Akadama is a volcanic soil - it is composed of partially to completely altered tephra deposits of volcanic ash and pumice. Generally you will put a shallow layer of soil in the bottom of the pot, put your bonsai in the pot and add the same size soil on top of the roots. Several other types of soils will do exactly the same job, with differences in handling its job, primarily depending on climate conditions and the growing demands of the tree it serves. If you are growing them out in a big pot, I might consider adding 1/4 pine bark to the mix, but no higher. My Bonsai are always stowed in a cold frame greenhouse. This I mix with pebbles of Leca or lava e.g. A Bonsai growing in broken-down Akadama won't automatically die; it would be wrong of me to state this. - Morten Albek, We use 100% volcanic soil without any mixture except adding the slow release organic fertilizer (sun flower seeds made). - Robert Steven, I use Akadama because it is one of the best ingredient to use. Enjoy reading! The Japanese climate, and their lacking availability of other soil types makes akadama their choice. 3. Best for acid loving plants. Following these simple instructions a perfect very open free-draining mix can be achieved - ideal for bonsai culture. Indoor Plants: Kanuma 3 parts, Akadama 4 parts, Matured pine fines 3 parts. HARD AKADAMA (neutral pH): It is on the cool side in summer here in San Francisco Bay Area. ETBE degrada- Small gravel of a uniform/graded size could be used instead. It's not clay, so the particles do not adhere to each other. Bulbs: Kanuma 5 parts, Akadama 2 parts, Matured pine fines 3 parts. And then learn how to water and fertilize properly. Local Stockists . It provides a full range of bonsai trees, pots and tools. (Shallow Bonsai pots have higher water tables and are naturally more water retentive, the reverse happens with deep pots and there is a tendency for the soil to dry out more quickly). Zelkova/Elms: Akadama 8 parts, CRS 2 parts. The humid Japanese climate during summer and frequent repotting of trees, practically makes akadama a favorite choice of Bonsai soil there (also economically compared to importing soils). The best alternative / substitute for akadama Best soil for your indoor and outdoor bonsais/ succulents and cactus. Nor less than the European average Quart Bag with mixed size granules from the desert and high mountains medium... Kanuma can be used kanuma soil substitute ' ( Catlitter ) on my trees other soil types makes Akadama their choice -. 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