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Your #1 Source for Organic & Biological Farm Supplies
Your #1 Source for Organic & Biological Farm Supplies

Soil Amendments

Mixed and single-source macro and micro-nutrients.

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  • Original price $63.00 - Original price $63.00
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    Current price $63.00

    Thorvin Kelp - 50 lb Bag

    This is the best kelp on the market and it is certified organically grown. This Icelandic kelp is processed in a state of the art plant that is bui...

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    Original price $63.00 - Original price $63.00
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    Current price $63.00
  • Original price $23.00 - Original price $23.00
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    Elemental Sulfur 90% - 50 lb Bag

    Elemental Sulfur90% - Pelletized sulfur is useful in lowering pH without potential aluminum sulfate toxicity.  Our elemental sulfur will have a lig...

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    Original price $23.00 - Original price $23.00
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  • Original price $23.25 - Original price $23.25
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    Azomite Micronized Powder - 44 lb Bag

    This naturally mined, volcanic mineral has over 66 minerals and trace elements that are important for plant nutrition and growth. It improves deple...

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    Original price $23.25 - Original price $23.25
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  • Original price $20.99 - Original price $20.99
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    Magnesium Sulfate Epsom Salt - Technical Grade - 50 lb Bag

    Magnesium Sulfate Epsom Salt Technical Grade - Mg 9.8%, S 12.9%. Quick acting Mg & S fertilizer. Can be used for a foliar application. Can be m...

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    Original price $20.99 - Original price $20.99
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  • Original price $23.25 - Original price $23.25
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    Azomite Granular - 44 lb Bag

    This naturally mined, volcanic mineral has over 66 minerals and trace elements that are important for plant nutrition and growth. It improves deple...

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    Original price $23.25 - Original price $23.25
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  • Original price $39.00 - Original price $39.00
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    Feather Meal (13-0-0) - 50 lb Bag

    Feather meal, a by-product of poultry processing is cooked and sterilized under intense heat using steam pressure cookers then dried and ground int...

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    Original price $39.00 - Original price $39.00
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  • Original price $36.00 - Original price $36.00
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    Bone Meal Steamed Granular (2-14-0) - 50 lb Bag

    Par-4 brand (2-14-0) is a steamed bone meal that is micro-pelletized for easy application. Bone meal is an excellent source of calcium at 20% and c...

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    Original price $36.00 - Original price $36.00
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  • Original price $55.00 - Original price $55.00
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    Nature's Kelp from Thorvin 50 lb

     Nature’s Kelp from Thorvin is a certified organic Ascophyllum Nodosum dried kelp that is a rich source of natural minerals which has been used wor...

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    Original price $55.00 - Original price $55.00
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  • Original price $28.00 - Original price $28.00
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    Alfalfa Meal Organically Grown for Plants or Animals (3-2-2) - 50 lb Bag

    As a fertilizer it has an analysis of (3-2-2 + minerals) and is a balanced fertilizer loaded with micro nutrients. The alfalfa plant has a deep roo...

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    Original price $28.00 - Original price $28.00
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  • Original price $35.00 - Original price $35.00
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    Allganic Soluble Potassium Sulfate SOP (0-0-52+S18%) - 50 lb Bag

    Potassium Sulfate Allganic Brand Water Soluble SOP (0-0-52-Sulfur 18%) This is a soluble SOP for crop production. It is best to apply according to ...

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    Original price $35.00 - Original price $35.00
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  • Original price $249.00 - Original price $249.00
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    AgSil 16H Potassium Silicate Powder 52% SiO2 (0-0-32) 50 lb Bag

     AgSil helps plants to resist toxicity from phosphorous, manganese, aluminum and iron and increases tolerance to salt. AgSil also aids in resistanc...

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    Original price $249.00 - Original price $249.00
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  • Original price $19.80 - Original price $19.80
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    Harmony Ag Organic Fertilizer (5-4-3) 9% Calcium - 50 lb

    Harmony Ag Organic Fertilizer w/ 9% Calcium (5-4-3) - Made from 100% all natural composted poultry layer manure. All-purpose for vegetables, fruits...

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    Original price $19.80 - Original price $19.80
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  • Original price $60.00 - Original price $60.00
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    Neversink Fertilizer Blend - 50 lb Bag

    Neversink Blend is a custom fertilizer formulated by Conor Crickmore of Neversink Farm.  Check out Neversink's fantastic workshops as well as their...

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    Original price $60.00 - Original price $60.00
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  • Original price $34.00 - Original price $34.00
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    Iron Sulfate Powder 20% - 50 lb Bag

    Essential Iron 20%. Ferrous (Iron) Sulfate Heptahydrate. A soluble product that can be broadcast, side banded or foliar sprayed. Guaranteed Analysi...

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    Original price $34.00 - Original price $34.00
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  • Original price $59.00 - Original price $59.00
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    Blood Meal (12-0-0) - 50 lb Bag

    Blood Meal (12-0-0) - A natural source of nitrogen, blood meal is ideal for promoting lush and green vegetative growth. The high nitrogen is rapidl...

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    Original price $59.00 - Original price $59.00
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  • Original price $27.00 - Original price $27.00
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    Greensand by Agrolift (0-0-1.4) - 50 lb Bag

    Greensand contains minerals and trace elements that improves the chemical, physical and biological conditions of the soil as well as the moisture a...

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    Original price $27.00 - Original price $27.00
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  • Original price $69.00 - Original price $69.00
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    Nature Safe 7-7-7 Soluble Powder - 50 lb Bag

    NatureSafe Triple 7 (7-7-7) Dry Flowable is a fully soluble general purpose fertilizer from corn steep liquor.  The 6.5% water soluble nitrogen pro...

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    Original price $69.00 - Original price $69.00
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  • Original price $34.00 - Original price $34.00
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    Nature Safe Fertilizer (8-5-5) - 50 lb Bag

    Pelleted general use fertilizer derived from meat and bone meal, feather meal, blood meal, and sulfate of potash. The 1.2% of water soluble N will ...

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    Original price $34.00 - Original price $34.00
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  • Original price $33.25 - Original price $33.25
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    ALLGANIC Nitrogen Plus (15-0-2) 50 lb Bag

    Allganic® Nitrogen Plus is SQM's newest formulation and no longer Haz Mat. This micro pelletized natural sodium nitrate from Chile, contains 15% Ni...

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    Original price $33.25 - Original price $33.25
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  • Original price $32.00 - Original price $32.00
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    Ferti Fulvic Plus (90% Fulvic Acid) - 5 lb Bag

    Derived from plants with a 90% (min.) content of organic fulvic acid. Its chelating effect, physiological and biological activity give the plant m...

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    Original price $32.00 - Original price $32.00
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  • Original price $26.00 - Original price $26.00
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    Fertoz Organic Granulated Rock Phosphate Fertilizer 0-20-0 - 50 lbs

    Fertoz Organic Phosphorus replacing Calphos with this 2X concentrated granulated phosphate fertilizer.Total Phosphorus is 20% (available phosphorus...

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    Original price $26.00 - Original price $26.00
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  • Original price $43.00 - Original price $43.00
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    $43.00
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    Potassium Sulfate Granular (SOP) (0-0-50+S17%) - 50 lb Bag

    Potassium is essential for a vigorous root system, plant growth, disease resistance, as well as fruit and vegetable quality. SOP granular is a natu...

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    Original price $43.00 - Original price $43.00
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  • Original price $290.00 - Original price $290.00
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    Ferti-Nitro Plus Soluble Soy (13.62-0-0) - 50 lb Bag

    From Ferti-Organic - A water-soluble powder produced enzymatically, without animal by-products. A nontoxic, non-polluting and vegan plant nutrient....

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    Original price $290.00 - Original price $290.00
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  • Original price $6.25 - Original price $6.25
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    Hi-Cal Lime Powder - 50 lb Bag

    This is a pulverized powder (calcium carbonate) - This high quality 100% pulverized limestone is high in calcium and very low in magnesium content....

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    Original price $6.25 - Original price $6.25
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  • Original price $89.00 - Original price $89.00
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    BioLink® All Purpose Liquid (3-3-3) Plus Micros - 2.5 Gallon

    A Westbridge ORGANIC BIOLINK® product that improves root and seedling vigor as well as flowering and fruit set. Can help with stressed plants. DERI...

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    Original price $89.00 - Original price $89.00
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  • Original price $16.25 - Original price $16.25
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    Worm Castings Mountain Gate Organics - 25 lb Bag

    These worm castings are from Mountain Gate Organics out of Rockingham, VA and go through a multi-screening process to eliminate worm eggs without ...

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    Original price $16.25 - Original price $16.25
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  • Original price $99.00 - Original price $99.00
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    Copper Sulfate Powder - 50 lb Bag

    COPPER SULFATE- Chemical Analysis, Copper (Cu) 25.2% min, Arsenic (Ar) 10 ppm max, Cadmium (Cd) 15 ppm max, Lead (Pb) 50 ppm Copper Sulfate is a va...

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    Original price $99.00 - Original price $99.00
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  • Original price $27.50 - Original price $27.50
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    Sea-90 Minerals & Trace Elements for Crops - 50 lb Bag

    SEA-90 sea mineral solids are 100% natural water soluble minerals listed by the USDA National Organic Program and Organic Materials Review Institut...

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    Original price $27.50 - Original price $27.50
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  • Original price $62.00 - Original price $62.00
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    Brown's Fish Fertilizer (2-3-1) - 5 Gallons

    Produced in Western North Carolina. This product is made from fresh water trout. Brown's is a fish hydrolysate and is produced using a cold process...

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    Original price $62.00 - Original price $62.00
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  • Original price $22.50 - Original price $22.50
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    Symphony Organic Fertilizer w/9% Ca (5-4-3) - 50 lb Bag

    Almost identical to Harmony but it comes from the USDA organic egg laying operation at the same NY farm that produces Harmony. What is in Harmony a...

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    Original price $22.50 - Original price $22.50
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  • Original price $78.00 - Original price $78.00
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    Zinc Sulfate Powder, Ag & Livestock- 50 lb Bag

    Zinc sulfate monohydrate powder, Guaranteed Analysis: Zinc(Zn) 35.5%, Water Soluble Zinc (Zn) 35.5%, Sulfur (S) 17%. Zinc sulfate powder can be app...

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    Original price $78.00 - Original price $78.00
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  • Original price $31.00 - Original price $31.00
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    Neptune's Harvest Liquid Fish Fertilizer (2-4-1) - 1 Gallon

    This hydrolyzed fish emulsion comes from the nutrient rich North Atlantic Ocean. Made from fresh fish remains. It is made by a unique cold process ...

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    Original price $31.00 - Original price $31.00
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    Original price $162.00 - Original price $162.00
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    $162.00
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    Grower’s Secret Nitrogen (14-0-0)- 50 lbs

    Provides a rich source of nitrogen for nitrogen loving plants. Use to help plants grow quickly, and to improve plant quality and appearance. Grower...

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    Original price $162.00 - Original price $162.00
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  • Original price $10.00 - Original price $10.00
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    $10.00
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    Current price $10.00

    Copper Sulfate Powder - 1 lb

    COPPER SULFATE- Chemical Analysis, Copper (Cu) 25.2% min, Arsenic (Ar) 10 ppm max, Cadmium (Cd) 15 ppm max, Lead (Pb) 50 ppm Copper Sulfate is a va...

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    Original price $10.00 - Original price $10.00
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  • Original price $12.00 - Original price $12.00
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    Elemental Sulfur 90% - 10 lb Bag

    Elemental Sulfur90% - Pelletized sulfur is useful in lowering pH without potential aluminum sulfate toxicity.  Our elemental sulfur will have a lig...

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    Original price $12.00 - Original price $12.00
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  • Original price $13.50 - Original price $13.50
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    Biogreaux Blackstrap Molasses (1-0-5) 1 Gallon

    Biogreaux Blackstrap Molasses is an all-natural organic fertilizer and potassium booster made from the byproduct of Louisiana sugarcane processing....

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    Original price $13.50 - Original price $13.50
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  • Original price $41.50 - Original price $41.50
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    Endomycorrhizal Inoculant (BEI) Micronized Powder - 1.5 lb

    From BioOrganics this product contains a blend of eight top types of Endospores - Glomus aggregatum, G. clarum, G. deserticola, G. intraradices, G....

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    Original price $41.50 - Original price $41.50
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  • Original price $18.50 - Original price $18.50
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    Brown's Fish Fertilizer (2-3-1) - 1 Gallon

    Produced in Western North Carolina. This product is made from fresh water trout. Brown's is a fish hydrolysate and is produced using a cold process...

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    Original price $18.50 - Original price $18.50
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    $18.50
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    Current price $18.50
  • Original price $38.00 - Original price $38.00
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    CrabLife Flake 3-3-0 +19% Ca - 44 lb Bag

    By providing existing soil microbes with food and energy, CrabLife™ naturally and safely improves soil health by enhancing the beneficial microbial...

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    Original price $38.00 - Original price $38.00
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  • Original price $26.00 - Original price $26.00
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    Biomin® Booster 126 Amino Acid Chelated Minerals - Gallon

    A mixture of the amino acid encapsulated micronutrients magnesium, boron, copper, iron, manganese, and zinc. Created using an encapsulation of thes...

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    Original price $26.00 - Original price $26.00
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  • Original price $37.00 - Original price $37.00
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    Nature Safe Organic Nitrogen Fertilizer (13-0-0) - 50 lb Bag

    This high nitrogen fertilizer is derived from feather meal, meat meal and blood meal. It contains 12.04% slowly available water insoluble nitrogen ...

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    Original price $37.00 - Original price $37.00
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  • Original price $11.00 - Original price $11.00
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    $11.00
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    Zinc Sulfate Powder, Ag & Livestock, 1 lb Bag

    Zinc sulfate monohydrate powder, Guaranteed Analysis: Zinc(Zn) 35.5%, Water Soluble Zinc (Zn) 35.5%, Sulfur (S) 17%. Zinc sulfate powder can be app...

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    Original price $11.00 - Original price $11.00
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  • Original price $20.00 - Original price $20.00
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    Solubor 20.5% Boron (Sodium Borate) - 5 lb Bag

    Solubor® is manufactured to combine the highest concentration of boron with the maximum possible dispersion and solubility in water. As such, it ha...

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    Original price $20.00 - Original price $20.00
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  • Original price $89.00 - Original price $89.00
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    Current price $89.00

    Solubor 20.5% Boron (Sodium Borate) - 50 lb Bag

    Solubor® is manufactured to combine the highest concentration of boron with the maximum possible dispersion and solubility in water. As such, it ha...

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    Original price $89.00 - Original price $89.00
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    Current price $89.00
  • Original price $12.00 - Original price $12.00
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    Boron 10% Granular - 10 lb Bag

    Boron 10 % Cameron Chemicals Brand - Pelletized and derived from Sodium Calcium Borate, Non-Acid forming, Product of Chile. Side dress plants or b...

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    Original price $12.00 - Original price $12.00
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  • Original price $14.00 - Original price $14.00
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    $14.00
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    Current price $14.00

    Potassium Sulfate Granular (SOP) (0-0-50+S17%) - 10 lb Bag

    Potassium is essential for a vigorous root system, plant growth, disease resistance, as well as fruit and vegetable quality. SOP granular is a natu...

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    Original price $14.00 - Original price $14.00
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    $14.00
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    Current price $14.00
  • Original price $18.00 - Original price $18.00
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    $18.00
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    Rock Phosphate Pelletized (0-3-0) - 50 lb Bag

    Ida-Gro brand pelletized (0-3-0) - 20% total phosphate, 3% available phosphate and 20% calcium. Biological activity speeds release in compost or in...

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    Original price $18.00 - Original price $18.00
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  • Original price $73.00 - Original price $73.00
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    $73.00
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    Current price $73.00

    BioLink® Cal Plus Liquid 6% - 2.5 Gallon

    From ORGANIC BIOLINK® this liquid Calcium is complexed with naturally fermented organic acids and is immediately available to plants. Calcium is es...

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    Original price $73.00 - Original price $73.00
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    $73.00
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    Current price $73.00