The Orchid Doctor Articles under the Heading Copper

Copper Comments
COPPER: Effect on Orchids They are sensitive to copper; metal stakes containing copper might be toxic. A61-54They are sensitive to it; metal stakes containing it may be toxic; citrus trees in the tropics sprayed with a copper compound lack orchids. A85-1119 0
COPPER WATER PIPES: In Greenhouse Are very popular; not likely to harm plants unless water supply has a high carbonic acid content. A76-1102 0

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