After finding how different bonsai soil mix used in South India is (see http://lomov.blogspot.com.au/2011/12/bonsai-soil-for-chennai-climate.html), I was curious about the bonsai mix used in Singapore. A couple of Singapore bonsai growers told me that they mix two components ‘burned soil’ and ‘top soil’. Burned soil (bottom left image) is imported from Malaysia. Apparently it is collected from oil palm plantations after they have been on fire. The top layer of clay soil gets baked and that’s what is collected. It is pretty much their equivalent of Akadama. What they call ‘top soil’ (bottom right image) is a good quality compost with coarse particles. The soil mix they use in Singapore is not that different from the one I use in Sydney after all.