(Sodium Tetraborate, 20.5% B) Soluble borate for fluid fertilizers and nutrient sprays. Boron is essential for all stages of tree growth and fruit...
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(0-0-52) The most economical source of available potassium. Moderate to fast-release. If your soil has sufficient magnesium, this is the potassium...
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(33% CaCO3) When the price of aragonite spiked a few years ago, we tried to steer growers toward the chemically identical Calcitic Limestone, but...
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(0-0-0.2, 1.8% Ca) Named for its A-to-Z of Minerals including Trace Elements; contains over 67 minerals beneficial to plants and animals.
A mix of
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(0-0-0.2, 5% Ca) Named for its A-to-Z of Minerals including Trace Elements; contains over 67 minerals beneficial to plants and animals.
A mix of
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(0-0-0.2, 5% Ca) Named for its A-to-Z of Minerals including Trace Elements; contains over 67 minerals beneficial to plants and animals, including...
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(49.3% SiO2, 13.3% Al2O3, 9.2% CaO, 5.7% MgO, plus trace minerals) A paramagnetic stone powder from the Pioneer Valley of Massachusetts for...
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(0-7-0, 20% total Phosphate, plus at least 30% Ca and 10% SiO2. Natural phosphorus source from mines in British Columbia, Montana, and Mexico....
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Contains about 5% potassium in very slow-release form. Plants need potassium for sugar and starch production. Granite meal can be added to the...
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(Calcium Sulfate CaSO4•2H2O, 21% Ca, 16% S) Gypsum is a good source of calcium when the pH is already at a desired level. The sulfur in gypsum...
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Max out your soil health! This is a powerful soil restoration amendment designed to raise your soil’s cation exchange capacity while adding high...
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(10.8% Mg, 22% S) Langbeinite is a marine deposit of potassium sulfate and magnesium sulfate in soluble form. A good source of immediate potassium...
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Manganese helps plants to synthesize chlorophyll and is used in electron transport during photosynthesis. Manganese availability may be limited by...
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Calcium helps strengthen plants’ cell walls, improving crop quality, disease resistance and storage capacity. Calcium uptake may be reduced by...
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Copper is necessary for efficient photosynthesis and respiration and affects the sugar content and flavor of produce. Copper availability may be...
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Iron is essential for chlorophyll development and function, and is also involved in nitrogen fixation by legumes. Iron availability may be limited...
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Zinc is a component of auxin, an essential growth hormone, and is also necessary for proper root development. Adequate zinc improves cold...
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(9.8% water-soluble Mg, 12.9% S) Magnesium is a building block of chlorophyll and therefore essential to efficient photosynthesis. In...
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(0-3-0, 21-25% total P2O5) 40% CaO. The consistency of rich soil. Comes from the washing piles left behind when high-grade ore was extracted to...
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Pro-Select Prill (87% CaCO3, 7% MgCO3). Cal Carb Equivalent 95.8%. The most common and most frequently used soil conditioner. Calcitic is the...
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Pelleted Dolomitic Limestone (57.7% CaCO3, 33% MgCO3). Cal Carb Equivalent 96.9%. The least expensive liming agent. Use to sweeten soil (raise pH)...
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Agricultural Sulfur. 90% elemental sulfur, 10% bentonite clay. Use to lower soil pH (make it more acidic). Often helpful for both lowbush and...
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(48% CaO and 52% SiO2). Cal Carb Equivalent 76.0%. Soluble-grade and at least 95% pure (may contain trace amounts of iron, manganese and...
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Zeolites are aluminosilicate lattices, derived from volcanic ash, that hold up to 55% of their weight in water in the small cavities of their...
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