Langbeinite

Soil Supply Co. Verified independent store

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Langbeinite is a natural, three-in-one mineral fertiliser providing potassium, magnesium, and sulphur from a single source. Derived from a specific ancient lake bed deposit million s of years old, langbeinite exists naturally in this form — it is not liberated from rock through chemical means like many forms of potassium sulphate, making it a cleaner, more natural input for soil building. With 21% potassium, 18% sulphur, and 7% magnesium, langbeinite covers three essential elements that plants demand heavily during flowering and fruit development. Potassium drives flower size and frost hardiness, magnesium supports enzymatic processes and chlorophyll production, and sulphur underpins enzyme functioning and protein synthesis. The benefits extend to improved disease and pest resistance, stronger root development, increased yields, and better taste and quality in fruits and vegetables. Because it supplies potassium and magnesium together in complementary ratios — unlike potash, which delivers potassium alone, is synthetically liberated, and can imbalance soil — it feeds heavy flowering demand for Potassium while also providing ample Magnesium as a catalyst nutrient for plant metabolic function. Show more