Down to Earth Langbeinite 0-0-221lb - OMRI ListedA unique 3-in-1 combination of Potassium, Magnesium and Sulfur, Langbeinite is a naturally occurring source of these three vital plant nutrients. Potassium is essential for high quality fruit; Magnesium is required for the synthesis of chlorophyll and Sulfur is needed for enzyme activation.
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