Author Topic: help me decipher this akward soil recipe  (Read 1893 times)


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help me decipher this akward soil recipe
« on: May 04, 2016, 08:56 AM »
I recently bought the book Bonsai With Japanese Maples by peter adams and in it he gives this suggested recipe for j-maple bonsai soil:
5 parts mixed sand (see below)
2 parts trade brand soil-less compost, like composted peat
2 parts leaf mold + peat, or fir bark
1 part fine pumice (lava rock)

2 parts fine grade aquarium gravel
2 parts coarse textured gravel or decomposted granite
2 parts grit + sand

now, my questions are:
1. what is composted peat? is it the same as peat moss?
2. where he says: "2 parts leaf mold + peat, or fir bark" does the plus sign mean combine the leaf mold and peat? if so why repeat the inclusion of peat? it was in the previous step. also, fir bark is completely different from soft, moisture retaining leaf mold, so why does it say use one OR the other? it's like saying "use unammended potting soil or large rocks."
3. what is grit?
Thanks in advance!


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Re: help me decipher this akward soil recipe
« Reply #1 on: June 10, 2016, 10:21 AM »
These recipes are very dated. We now use "modern substrates" such as pumice, lava, calcined clay, akadama. The use of pine bark is controversial but some folks do use it for deciduous trees.

There are plenty of soil threads, check 'em out.
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