> I don't think the original questioner wanted to know whether he
>could grow CPs in clay, I think he was refering to these weird little
>fired (rock hard) +-4mm diam smooth, non porous clay pebbles, which my
>tatei's were growing in when I received them. They look great for
>Pings, but nobody here in Cape Town seems to know where I can obtain
>them. If they are the fired things?, then I would think they would be
>as harmful as clay pots are!!!!!!!.
Yes, I think the weird "clay", in the original Stefano's message, is a
little clay pebble.
In Italy, these clay pebbles are named "argilla espansa" (expanded clay) and
it was used to absorb the water and then to moisture the soil.
Infact the Expanded Clay usually stays underneath the soil, to prevent a too
fast drying up.
Ciao,
Fabio Bernieri.