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Old 05-11-2008, 12:48 AM posted to rec.gardens.orchids
Duncan Vincent Duncan Vincent is offline
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First recorded activity by GardenBanter: Oct 2008
Posts: 17
Default cattleya leaf tip necrosis

The calcium found in water is almost totally unabsorbable by plants(or
humans for that matter). Makes my blood boil every time i see a tums
commercial telling people that it "contains calcium that your body needs".
Calcium nitrate is very readily absorbed and is very cheap.