Michael Persiano wrote:
Hi Michael

Tiziano:

I have had many individuals bring me trees with root zone problems

related to the "fines" in lava stone-based soil
mixes.

The "fines" seem to create drainage problems.
rught in fact for yamadory some people of teh
Vesuvio region use *dirty lava* that is mived
with dust and so on and use in well drained
containers
otherwise has to be sifted exactly as Akadama


For this reason, I am not an advocate of the reddish lava

stone mixes that I have seen.
well in Italy and france as have some problems
with aka prices and imports , I personally
realize that aka even best quality. because of
our climate needs to be watered more often than
usual and has a tendency to brittle and become
dusty

I have not used or seen possolana, but I understand that

it is chestnut to gray in color, porous, and fast
draining. right
I use 4-5 mm grade and feel very happy as I
can rececle it after having washed and sterilized
http://www.agricola2000.it/
small pic on the right

This sounds like it might be a good component
for soil mixes.
well I appreciate a lot as coarse good
retenmtion /release and aeration of the soils and
in mix with sequoia bark is fine
best regards
Tiziano




THEO
Chiunque puo diventare con la pratica
Maestro
in Qualsiasi Cosa
A.B Dixit



http://groups.google.it/group/free.it.arte.bonsai
http://www.easybonsai.altervista.org/