Pumice
penstemon (Wed, 21 Oct 2015 10:47:09 PDT)
I get questions about potting mixes and especially about pumice, so I
have posted on pumice on the blog: http://www.thebulbmaven.typepad.com/.
One hundred percent in agreement here, especially with the perlite dust business.
Stores that supply material for bonsai sell pumice, but it’s white. Works just as well.
Bob
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