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Old March 22, 2012   #2
rnewste
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Join Date: Apr 2007
Location: Campbell, CA
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Lyle,

I think you have your question backwards. Perlite does not absorb moisture - it is fired volcanic porous glass. By not adding in enough Perlite into the Potting Mix will cause the Mix to be too moist.

With the Sta-Green, which contains almost no Perlite, I would use 2 scoops Perlite to every 6 or 7 scoops Sta-Green. That will give you about a 22 to 25% final ratio of Perlite in the Mix.

Raybo
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