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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AgSil 16H Potassium Silicate | 4 lb Re-Closable...Regular price $45.34Regular priceUnit price $11.34 per lb
$51.00Sale price $45.34Sold out -
Calcium Nitrate 15.5-0-0 | 4 lbRegular price $6.04Regular priceUnit price $1.51 per lb
$0.00Sale price $6.04 -
Calcium Chloride fertilizer 50 lb.Regular price $36.02Regular priceUnit price $0.72 per lb$43.40Sale price $36.02Grower Price -
Sequestar 6% Fe EDDHA Iron ChelateRegular price From $39.68Regular priceUnit price $7.94 per lb$60.81Sale price From $39.68Grower Price -
10% Iron DTPA chelated fertilizer 4 lb.Regular price $57.85Regular priceUnit price $14.46 per lb
$0.00Sale price $57.85 -
Haifa Magnisal Magnesium Nitrate 11-0-0 Fertilizer 50 lb.Regular price $37.44Regular priceUnit price $0.75 per lb
$65.00Sale price $37.44Grower Price -
Chelated Micronutrient Mix 4.4 lb.Regular price $65.62Regular priceUnit price $16.41 per lb$80.56Sale price $65.62Grower Price -
Chelated Micronutrient Mix 22 lb.Regular price $275.00Regular priceUnit price $12.50 per lb$336.21Sale price $275.00Grower Price -
Ferti-Organic Soluble Seaweed Extract 0-0-14 - 50 lbRegular price $370.90Regular priceUnit price $7.42 per lb$568.40Sale price $370.90Grower Price -
Metalosate Calcium Organic 5 lb.Regular price $96.91Regular priceUnit price per$143.80Sale price $96.91Grower Price -
Ferti-Corn Steep Powder 6-7-7 Organic NPK - 4...Regular price $19.68Regular priceUnit price $4.92 per lb
$0.00Sale price $19.68 -
AgSil 16H Potassium Silicate 1 lbRegular price $19.80Regular priceUnit price $19.80 per lb$23.76Sale price $19.80Sold out -
Ferti-Fulvic Plus 90% Fulvic Acid - 1 lbRegular price $13.81Regular priceUnit price $13.81 per lb
$0.00Sale price $13.81 -
PureCal 13-0-0 Ammonium-Free Calcium Nitrate Fertilizer | 4...Regular price $6.06Regular priceUnit price $1.52 per lb
$0.00Sale price $6.06Sold out -
5-11-26 Hydroponic Special fertilizer 4 lb.Regular price $24.00Regular priceUnit price $6.00 per lb$50.91Sale price $24.00Grower Price -
FibreDust 5KG NAKED Coconut Coir BlockRegular price $11.14Regular priceUnit price per
$9.90Sale price $11.14
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