AKADAMA:- a clay like soil. can retain its granular structure for sevral years most used and probably best for most trees
KANUMA:- a soft pumice based soil sepially mined for the cultivation of azaleas as it is an asidic soil
SIFTED PEAT:- NOT ENVIROMENTALLY FRIENDLY!!!!!!!!!!!!!!!BUT an excellent organic ingredient
HORTICULTURAL GRIT:-great for maintaining an open soil and good drainage
SOIL IMPROVERS
(GRIT is probably 1)
ORCHID-GROWER'S BARK:-long lasting ideal sized particles with little (if any wastage)
PUMICE:-a naturally occuring soil improver which retains moisture (handy for people who cant keep up on watering times or in summer) while keeping the soil open for free-drainging