The Orchid Doctor Articles under the Heading Food Elements

Food Elements Comments
FOOD ELEMENTS: 14 Needed by Orchids The major elements are: nitrogen (N), phosphorous (P), and potash (K); from the air and water are derived: hydrogen, oxygen, carbon; the trace and minor elements are: sulfur, manganese, iron, zinc, boron, copper, calcium, and magnesium. OD74-59 0

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