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Old September 1, 2013   #5
nolabelle
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Join Date: Jun 2013
Location: N.O., LA (Zone 8b)
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I don't see anything about a 3-2-1 mix in Raybo's PDF. This is what I've read:

I recommend Premier Pro-Mix
BX for optimum wicking and
plant vigor. If economy is of
prime importance, Miracle-Gro
Potting Mix (WITHOUT Moisture C
ontrol) can be substituted.
Never use Potting “Soil” as this will compress too much,
negatively affecting root aeration.

That says nothing about spaghnum nor bark fines. It does mention perlite and lime. I remain confused. Miracle-Gro, I can deal with, but would rather not.
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