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Soil Amendments

Mixed and single-source macro and micro-nutrients.

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  • Rock Phosphate Pelletized (0-3-0) Metric Ton Tote

    Ida-Gro brand pelletized (0-3-0) - 20% total phosphate, 3% available phosphate, and 20% calcium is derived from a naturally mined soft rock phospha...

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  • Fish Bone Meal 40% Protein (4-14-0) - Ton Tote

    A marine-based alternative to traditional steamed bone meal and a great source of organic phosphorus and calcium (12%-17%). Derived from fresh cutt...

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  • Biogreaux Blackstrap Molasses 275 Gallon (1-0-5)

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

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  • Biogreaux Blackstrap Molasses 55 Gallon Drum (1-0-5)

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

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  • Endomycorrhizal Inoculant (BEI) Micronized Powder - 25 lb Bag

    From BioOrganics this product contains a blend of nine species of Endomycorrhizal spores: Glomus aggregatum, G. etunicatum, G. intraradices, G. mos...

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  • Endomycorrhizal Inoculant (BEI) Micronized Powder - 10 lb Bag

    From BioOrganics this product contains a blend of nine species of Endomycorrhizal spores: Glomus aggregatum, G. etunicatum, G. intraradices, G. mos...

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    Crescendo Organic Fertilizer (8-2-2) - Full Pallet 40 x 50 lb

    A fertilizer derived from composted poultry layer manure and feather meal. All-purpose for vegetables, fruits, lawn and landscape. Analysis: 3.2% w...

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    Brown's Fish Fertilizer (2-3-1) - 275 Gallons

    Produced in Western North Carolina, this product is made from fresh water fish. Brown's Fish Fertilizer is a fish hydrolysate produced by a cold en...

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    Crescendo Organic Fertilizer (8-2-2) 5% Calcium - 50 lb Bag

    A fertilizer derived from composted poultry layer manure and feather meal. All-purpose for vegetables, fruits, lawn and landscape. Analysis: 3.2% w...

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    Custom Fertilizer Blends

    Seven Springs can work with you to custom blend fertilizers that meet a desired analysis or create the blend of your choice using your preferred in...

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    Bone Meal Granulated (2-14-0) - 1 Ton Tote

    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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    Feather Meal - 1 Ton Tote

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

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    Potassium Sulfate Granular (SOP) (0-0-50+S17%) - 2200lb Tote

    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 $69.95 - Original price $69.95
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    Seabird Guano - 55 lb bag

    This Seabird Guano contains high levels of phosphate and exceptional amounts of calcium. It is the ultimate formulation for explosive fruiting and ...

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    Original price $56.75 - Original price $56.75
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    VRD: Volcanic Rock Dust (Basalt) - 55 lb bag

    VRD™: Volcanic Rock Dust™ is found 4 degrees above the equator in an ultra rich, tropical, microclimate in Indonesia and is screened through 200 me...

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  • Original price $37.00 - Original price $37.00
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    Ferti Nitro Plus Soluble Soy (13.62-0-0) - 5 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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    Soybean Meal (7-1-2) - 50 lb bag

    Vegetable protein (N source) with a relatively high mineralization rate. Also commonly used as a feed ingredient. Not approved for use in certified...

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    DTE Crab Meal (4-3-0) - 5 lb

    A byproduct of the West Coast crab harvest, Down To Earth’s Crab Meal 4-3-0 is a wonderful source of plant nutrients for vegetable gardens, flower ...

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    DTE Neem Seed Meal (6-1-2) - 5 lb

    Down To Earth’s Neem Seed Meal 6-1-2 is an excellent all natural fertilizer for enriching garden and agricultural soils and encouraging optimum pla...

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    DTE Feather Meal (12-0-0) - 5 lb

    Down To Earth’s Feather Meal 12-0-0 is derived from hydrolyzed, dried and ground poultry feathers. An all-natural source of slow-release nitrogen, ...

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    DTE Fish Bone Meal (4-12-0) - 5 lb

    Down To Earth’s Fish Bone Meal 4-12-0 is a marine-based alternative to traditional terrestrial bone meal options and is a great source of organic p...

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    DTE Solution Grade Potassium Sulfate (0-0-50) - 5 lb

    Potassium Sulfate contains potassium (K) and sulfur (S) – two of the essential nutrients that plants require to achieve optimum growth and reach th...

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    DTE Solution Grade Langbeinite (0-0-21.5) - 5 lb

    Langbeinite (AKA KMag, or SulPoMag) is a mineral that contains potassium (K), magnesium (Mg) and sulfur (S) – three of the essential nutrients that...

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    DTE Solution Grade Calcium 96 - 5 lb

    Ultra fine and highly reactive, Calcium 96 is a natural limestone powder that provides immediate availability of this valuable nutrient for plants ...

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    DTE Solution Grade Gypsum - 5 lb

    Gypsum is composed of calcium (Ca) and sulfur (S) – two of the essential nutrients that plants require to achieve optimum growth and reach their ma...

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  • Original price $13.20 - Original price $13.20
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    DTE Cottonseed Meal (6-2-1) - 5 lb

    Down To Earth’s Cottonseed Meal 6-2-1 is traditionally used to feed plants that thrive in lower pH soils, such as berries, flowering shrubs and eve...

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    DTE Fish Meal (8-6-0) - 5 lb

    Down To Earth’s Fish Meal 8-6-0 is recommended for vegetable gardens, flower beds and all types of outdoor plants, trees and shrubs. DTE Fish Meal ...

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    DTE Insect Frass (3-1-1) - 2 lb

    Down To Earth’s Insect Frass is an all-natural fertilizer produced through sustainable insect farming and derived from the larvae manure and exoske...

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    DTE Seabird Guano (0-11-0) - 5 lb

    Use Down To Earth’s high-phosphorus Seabird 0-11-0 guano throughout the flowering period for all indoor and outdoor plants. Strawberries, melons, v...

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  • Crab Shell 4-4-0 +18% Ca - 1 ton tote

    Looking for high levels of Chitin to help boost soil productivity? Then we have the crab shell for you! Made from 100% Blue Crab with no other addi...

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    Genesys N-Force (8-0-0) - 2.5 Gallon

    N-Force is a liquid, plant based amino acid fertilizer that is approved for use in Organic Crop Production by CDFA and meets USDA National Organic ...

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    Oyster Shell Coarse - 50 lb Bag

    Obtain optimum eggshell quality with Coastal Brand Poultry Shell. This special blend features calcium carbonate to help grow healthy eggshells and ...

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    DTE Oyster Shell - 5 lb

    Down To Earth’s Oyster Shell is an all-natural and high-quality source of the essential plant nutrient calcium. Ancient oyster shells are carefully...

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    Biomin N (5-0-0) - 2.5 Gallon

    BIOMIN N is a natural, non-fish, and organic nitrogen fertilizer derived from hydrolyzed vegetable protein. It is water soluble and designed for so...

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    Neptune's Harvest Liquid Crab & Lobster Shell (2-0-2) - 1 Gallon

    Beginning with our world-famous dried Crab and Lobster Shell, we grind everything down to a super-fine powder (through a process called micronizati...

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    Neptune's Harvest Tomato & Veg (2-4-2) - 1 Quart

    Introducing Neptune’s Harvest “Tomato & Veg” formula. This is a perfect complete fertilizer for your tomatoes, vegetables and more. Made from f...

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    Neptune's Harvest Tomato & Veg (2-4-2) - 1 Gallon

    Introducing Neptune’s Harvest “Tomato & Veg” formula. This is a perfect complete fertilizer for your tomatoes, vegetables and more. Made from f...

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    Neptune's Harvest Rose & Flowering (2-6-4) - 1 Quart

    Introducing Neptune’s Harvest "Rose & Flowering” formula. Rose & Flowering fertilizer is uniquely formulated for flowering plants to increa...

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    Neptune's Harvest Rose & Flowering (2-6-4) - 1 Gallon

    Introducing Neptune’s Harvest "Rose & Flowering” formula. Rose & Flowering fertilizer is uniquely formulated for flowering plants to increa...

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    Biomin N (5-0-0) - 1 Gallon

    BIOMIN N is a natural, non-fish, and organic nitrogen fertilizer derived from hydrolyzed vegetable protein. It is water soluble and designed for so...

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  • Original price $181.75 - Original price $181.75
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    Mikrobs Microbial Superpack - 5 lb Pail

    Mikrobs is an organic microbial soil amendment/bioinoculant for plant and root growth stimulation that also encourages preventative resistance agai...

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  • Nature Safe Organic Nitrogen Fertilizer (13-0-0) - 1 Ton Tote

    This high nitrogen fertilizer is derived from feather meal, meat meal, and blood meal. It contains 0.96% plant available nitrogen for green up in 7...

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    Mikro-Myco - 5 lb Pail

    18 species of beneficial soil microbes together in one superpack! Includes endo and ectomycorrhizae (Glomus, Rhizopogon, Pisolithus and Scleroderma...

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    Worm Castings Mountain Gate Organics - 5 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 t...

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  • Blood Meal (13-0-0) - 1 Ton Tote

    Blood Meal (13-0-0) - A natural source of nitrogen, blood meal is ideal for promoting lush and green vegetative growth. The blood meal has a high m...

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    Agro Lig Granular Humic Acids - 50 lb Bag

    Agro-Lig is a granular humic acid (65%) from leonardite used to improve soil. It is very effective in soils with low fertility, low organic matter,...

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    Diamond K Premium 97 Solution Grade Gypsum - 50 lb Bag

    An extremely pure, solution-grade calcium sulfate. Diamond K Premium 97 gypsum improves soil structure, crop quality and yields when used according...

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    Diamond K Solution Grade Ultra Fines SOP (0-0-50) - 50 lb Bag

    Diamond K Ultra Fines Sulfate of Potash is a high-purity, finely ground (minus 325 mesh) soluble potassium sulfate designed to be applied in soluti...

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