Hi Gary, O.C.F.Supply in the city of Orange, Calif.
It is white & quite fine, very dusty. They did not have any large size.
Oh? I didn't know that it retains less water than Sponge Rock. Interesting.
Cheers Wendy
"V_coerulea" wrote in message
...
What's your source and what color? I'd recommend rinsing anyway to get rid
of the really fine stuff. If you get colored, the red can have a
tremendous
amount of coloring, clay, fine silt depending on the provider. It's
similiar
to sponge rock but retains less water. I use it for all vandas, aerides,
ascocendas, ascofinetias, rhynchostylis, vandafinetias, brassovola, etc;
you
get the idea. In a mix; I haven't tried that yet. Let me know if you do
and
what are your results! Thanks.
Gary
"Wendy" wrote in message
news:rr3Ka.111117$MJ5.42093@fed1read03...
Anybody out there use pumice in potting mix? Wondering if it has to be
rinsed?
Cheers Wendy