The K-Lite fertilizer formula (12-1-1-10Ca-3Mg) has been developed in response to studies suggesting that excessive potassium, whether applied, obtained from, or accumulated in growing media can have a negative impact on the health of plants, especially in the absence of adequate calcium and magnesium levels.
Read more: "What do Orchids Eat?" - discusses the origin and logic behind K-Lite.
(Originally published in AOS Orchids, March 2013, republished here with permission)
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