Fertilizers
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Amendments
Soil Amendments & Growing MediaHealthy soil and growing media are the foundation...
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BioStimulants
Plant Biostimulants & Growth EnhancersBiostimulants are substances and microorganisms that improve plant...
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Specialty Crop Fertilizers
Professional-Grade Fertilizers Formulated for Specialty Crops Give your plants the precise nutrition...
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Foliar Fertilizers & Spray Supplies
Shop foliar fertilizers, soluble nutrients, biostimulants, and spray adjuvants for professional greenhouse,...
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Liquid Fertilizers
Blended Liquid Fertilizer ConcentratesLiquid fertilizer concentrates offer convenience and precision for hydroponic,...
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Organic Fertilizers
Dry Organic & Natural Mineral FertilizersCustom Hydro stocks a full range of...
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Schedule Consultation
Schedule a Fertilizer & Hydroponics ConsultationGet expert, one-on-one guidance from Custom Hydro...
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Stock Solution Preservatives
Preservatives for Fertilizer Solutions & Hydroponic ReservoirsMicrobial contamination in fertilizer stock solutions...
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Water Soluble Fertilizers
Shop water-soluble fertilizer ingredients and blended formulas for building a crop nutrition...
Shop water-soluble, liquid and organic fertilizers, amendments and biostimulants for commercial greenhouse, nursery, field and market-garden production. Find crop nutrition options for hydroponics, fertigation, foliar feeding and soil-based growing.
Browse the categories below by fertilizer type, crop or application. Compare nutrient analyses, fertilizer grades and package sizes on individual product pages, and choose products around your crop requirements, water quality and growing media. Organic-use listings, mixing guidance and application directions are product-specific.
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Calcium Formate - 30% soluble calcium fertilizerRegular price $52.04Regular priceUnit price per
$79.26Sale price $52.04Sold out -
Copper Sulfate Fine Crystals | 25% Cu 4...Regular price $21.00Regular priceUnit price per
$0.00Sale price $21.00 -
Diamond K Premium 97 Powdered Gypsum 50 lb.Regular price $13.97Regular priceUnit price $0.28 per lb$17.08Sale price $13.97Grower Price -
Calcium Chloride fertilizer 1 lb.Regular price $7.04Regular priceUnit price per
$0.00Sale price $7.04 -
Potassium Nitrate Fertilizer 20 lb – Haifa Multi-K...Regular price $41.78Regular priceUnit price per
$0.00Sale price $41.78 -
Manganese Sulfate fertilizer 1 lb.Regular price $5.00Regular priceUnit price per
$0.00Sale price $5.00 -
Boric Acid Powder | 99.9% Pure 1 lbRegular price $9.54Regular priceUnit price per
$0.00Sale price $9.54 -
Ferti-Nitro Plus Organic Nitrogen 13.62-0-0 - 20 lbRegular price $162.50Regular priceUnit price $8.13 per lb
$0.00Sale price $162.50 -
Haifa GrowClean 5-31-40 polyphosphate fertilizer 55 lb.Regular price $129.05Regular priceUnit price per
$161.00Sale price $129.05Sold out -
Hydroponic Nutrient Solution Lab TestRegular price $49.00Regular priceUnit price per
$0.00Sale price $49.00 -
Triple Super Phosphate 0-46-0 | 15% Ca |...Regular price $40.26Regular priceUnit price $0.81 per lb$66.00Sale price $40.26Grower Price -
Cobalt Sulfate, 8 ozRegular price $21.64Regular priceUnit price per
$0.00Sale price $21.64 -
Tecmangam Manganese Sulfate Soluble Powder | 32% Mn...Regular price $111.20Regular priceUnit price per
$138.80Sale price $111.20Grower Price -
5-11-26 Hydroponic Special fertilizer 1 lb.Regular price $11.55Regular priceUnit price $11.55 per lb
$0.00Sale price $11.55 -
Ammonium Sulfate 1 LBRegular price $4.75Regular priceUnit price per
$0.00Sale price $4.75 -
Sulfate of Potash 0-0-51 GG 20 lb.Regular price $36.26Regular priceUnit price $1.81 per lb
$0.00Sale price $36.26
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