Flower Power: Potassium Magnesium Sulfate

Potassium Magnesium Sulfate for Flowers

Potassium magnesium sulfate (SPM) and/or magnesium sulfate are excellent fertilizer materials to use during flowering, along with other needed minerals. Many products designed specifically for flowering are loaded with magnesium sulfate. The magnesium helps keep the sugars flowing all the way to the day of harvest, and sulfates are a plus. Sulfate compounds help actuate flowering genes in Citrus (and other plants), contributing to aromas and hastening the ripening process.

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