You are viewing all Organic Growers Supply products related to “Soil Amendments.”
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Amendments and Fertilizers
Custom Mixing
8193 If you’re tired of ineffectively mixing fertilizers or potting soil ingredients together in a wheelbarrow or tractor bucket, let us do the dirty... read more |
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Amendments and Fertilizers
Raw Biochar
8348 Join the carbon-farming revolution. Biochar is the product of heating organic matter in a low-oxygen environment: instead of releasing the carbon... read more |
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Amendments and Fertilizers
Soil Testing & Organic Fertilizer Recommendation Service
8194 Don’t guess—test! Applying fertilizers and soil amendments without the guidance of a professional soil test is like driving downtown with your... read more |
Animal-based
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Animal-based
North Country Organics® Bone Char
8283 (0-16-0, 32% P2O5, approx. 30% Ca) Burned bone meal provides large amounts of readily available phosphorus. The most economical source of P for... read more |
Minerals
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Mineral
20 Mule Team Borax Solubor® DF
8219 (Sodium Tetraborate, 20.5% B) Soluble borate for fluid fertilizers and nutrient sprays. Boron is essential for all stages of tree growth and fruit... read more |
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Mineral
Aragonite
8195 (33% CaCO3) When the price of aragonite spiked a few years ago, we tried to steer growers toward the chemically identical Calcitic Limestone, but... read more |
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Mineral
Azomite®, Field Grade Natural Trace Minerals
8214 (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 ... read more |
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Mineral
Azomite®, Micronized Natural Trace Minerals For Soil
8216 (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... read more |
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Mineral
BrixBlend Basalt
8222 (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... read more |
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Mineral
Fertoz Organic Granulated Rock Phosphate Fertilizer
8250 (0-6-0, up to 25% total P, plus at least 30% Ca and 10% SiO2. Natural phosphorus source from mines in British Columbia, Montana, and Mexico. Apply... read more |
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Mineral
Granite Meal
8231 Contains about 5% potassium in very slow-release form. Plants need potassium for sugar and starch production. Granite meal can be added to the... read more |
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Mineral
Gypsum, pelletized
8204 (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... read more |
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Mineral
Hum-Amend Max
8240 Max out your soil health! This is a powerful soil restoration amendment designed to raise your soil’s cation exchange capacity while adding high... read more |
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Mineral
K-Mag Granular Trio 0-0-22
8237 (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... read more |
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Mineral
Micronutrients Liquid Manganese
8244 Manganese helps plants to synthesize chlorophyll and is used in electron transport during photosynthesis. Manganese availability may be limited by... read more |
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Mineral
Micronutrients Liquid Calcium
8241 Calcium helps strengthen plants’ cell walls, improving crop quality, disease resistance and storage capacity. Calcium uptake may be reduced by... read more |
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Mineral
Micronutrients Liquid Copper
8242 Copper is necessary for efficient photosynthesis and respiration and affects the sugar content and flavor of produce. Copper availability may be... read more |
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Mineral
Micronutrients Liquid Iron
8243 Iron is essential for chlorophyll development and function, and is also involved in nitrogen fixation by legumes. Iron availability may be limited... read more |
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Mineral
Micronutrients Liquid Zinc
8245 Zinc is a component of auxin, an essential growth hormone, and is also necessary for proper root development. Adequate zinc improves cold... read more |
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Mineral
Monterey Epsom Salts
8228 (9.8% water-soluble Mg, 12.9% S) Magnesium is a building block of chlorophyll and therefore essential to efficient photosynthesis. In... read more |
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Mineral
Phosphate, Tennessee Brown Rock
8252 (0-6-0, 22% total P2O5) The consistency of rich soil. Comes from the washing piles left behind when high-grade ore was extracted to produce... read more |
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Mineral
Pro Pelleted Calcitic Limestone
8198 Pro-Select Prill (87% CaCO3, 7% MgCO3). Cal Carb Equivalent 95.8%. The most common and most frequently used soil conditioner. Calcitic is the... read more |
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Mineral
Pro Pelleted Limestone, Dolomitic Limestone Pro-Select Prill
8201 Pelleted Dolomitic Limestone (57.7% CaCO3, 33% MgCO3). Cal Carb Equivalent 96.9%. The least expensive liming agent. Use to sweeten soil (raise pH)... read more |
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Mineral
Three Elephant™ Sulfate of Potash (SOP) 0-0-50
8246 (0-0-50) The most economical source of available potassium. Apply at 200–500#/acre or 1#/100 sq ft. No New Hampshire Sales read more |
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Mineral
Tiger Organic 90CR Sulfur
8249 Agricultural Sulfur. 90% elemental sulfur, 10% bentonite clay. Use to lower soil pH (make it more acidic). Often helpful for both lowbush and... read more |
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Mineral
Wollastonite
8207 (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... read more |
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Mineral
ZeoMax Garden Aid
8255 Zeolites are aluminosilicate lattices, derived from volcanic ash, that hold up to 55% of their weight in water in the small cavities of their... read more |
Planting Mixes
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Planting Mix
Ancients Rise Mix
8336 Whether they be abandoned heirlooms or wild seedlings, tucked in the woods or growing alongside an old road, apple trees live on for hundreds of... read more |
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Planting Mix
Blueberry Booster
8321 A blend of Granite Meal, K-Mag, sulfur, Tennessee brown rock, Penobscot Blend Compost & Peat, and Azomite. Brings down the soil pH and provides... read more |
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Planting Mix
Fall Fruit Tree Prep Mix
8333 To prepare your land in fall or winter for spring fruit-tree planting, use this mix. Without digging a hole, spread one bag on an area 4–6' in... read more |
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Planting Mix
Fruition Mix
8330 A balanced fertilizer to keep your bearing fruit trees healthy and productive. Gypsum (to maintain optimum calcium levels to promote disease... read more |
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Planting Mix
Hole-Istic Spring Planting Mix
8324 Recommended for fruit trees at planting time. Formerly known as Fruit Tree Planting Mix. Our own well-balanced blend of Tennessee brown phosphate,... read more |
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Planting Mix
Sleepytime Garden Blend
8307 The last of the root vegetables have been tucked into the cellar, and the soil microbes snooze contentedly under a blanket of young winter rye.... read more |
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Planting Mix
Vegemighty
8309 (3.4-2.2-3.5) An excellent all-purpose fertilizer for those who prefer to avoid animal products. Great for flower bulbs because it won’t attract... read more |