perlite, pumice,
Wed, 05 Jul 2006 09:05:15 PDT
On 4 Jul 06, at 15:41, boutin wrote:

> Even out here in my rural part of California it is difficult to buy
> large bags of the coarse graded perlite.  They seem to only have or
> want to deliver the so called medium, which has lots of fines in it.

The "coarse" horticultural perlite I buy has gotten much finer the 
last couple of years.

BTW, a warning for those contemplating other sources: don't use 
perlite sold for insulating houses; it may contain fluorides, unlike 
"horticultural" perlite.

Rodger Whitlock
Victoria, British Columbia, Canada
Maritime Zone 8, a cool Mediterranean climate

on beautiful Vancouver Island

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