What is the ingredients for a top Bonsai soil and formula for fast growing?

Question

What is the ingredients for a top Bonsai soil and formula for fast growing?

Answer 1

There is a contradiction in your question. The purpose of bonsai is to miniaturize the growth and you're asking about fast growth which implies size. You can look at the link and refer to the composition that this artist/grower uses.

http://www.american-bonsai.com

Answer 2

The basic mix is a combination of organic and inorganic material that is fast draining, and coarse enough to allow good air circulation for good root development.

The ratio of inorganic/organic depends on what type of tree you are growing. On one end of the scale, tropicals need the most organic material while on the other side most conifers do best with more inorganic. Deciduous trees fall somewhere in between.

The ingredients I use in my mixes include -

Inorganic - Turface, builders sand, vermiculite

Organic - Pine bark, peatmoss

All of my mixes are an even mix of these ingredients. I usually vary the amount of Turface and pine bark to adjust for the individual plant type.