Bonsai Soil Recipes

I`M DOING BONSAI FOR 10 YEARS,AND I USE 1 PART GRANITE(GROWER KIND),2 PARTS HAYDITE,TURFACE OR TERRAGREEN AND 1 PART PINE BARK SIEVED TO 1/8 OF A INCH AND DISCHARGE ALL THE BIGGER AND THE SMALLEST PINE BARK AND RETAIN THE 1/8.

Dear, friends:

   I came to the United States couple months ago.  I am an entusiastic for the bonsai.
I had learned for almost ten years, but I found that to make bonsai here is very different.
How can I prepere the soil?  What I need to buy?

  Thank you very much for your cooperation!


   Sincerely,

                Maria Teresa Owens
                Tampa, Florida