Quote:
Originally Posted by Richard
I have encountered folks who in an effort to save money obtain rock gypsum from the California desert and wow, the pH of their soil rises immediately.
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Ahhh, so they aren't getting pure gypsum then. It likely contains lots and lots of free calcium not yet combined with sulphur.
Quote:
Originally Posted by Richard
... but also encourage you to treat your soil as described below
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Me too.