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 Nitrate 15.5-0-0 | 20 lbRegular price $20.55Regular priceUnit price $1.03 per lb$30.49Sale price $20.55Grower Price -
Pro Powders Silica Pro Potassium SilicateRegular price From $17.30Regular priceUnit price $17.30 per lb$24.99Sale price From $17.30Grower Price -
Dissolvine Iron Chelate 11% DTPA - 55 lb.Regular price $328.44Regular priceUnit price $5.96 per lb
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Calcium Chloride fertilizer 4 lb.Regular price $14.00Regular priceUnit price $3.50 per lb
$0.00Sale price $14.00 -
Calcium Chloride fertilizer 20 lb.Regular price $24.64Regular priceUnit price $1.23 per lb
$0.00Sale price $24.64 -
Ferti-Nitro Plus Organic Nitrogen 13.62-0-0 - 4 lbRegular price $41.02Regular priceUnit price $10.26 per lb
$0.00Sale price $41.02 -
PureCal 13-0-0 Ammonium-Free Calcium Nitrate Fertilizer | 20...Regular price $20.65Regular priceUnit price $1.03 per lb
$0.00Sale price $20.65Sold out -
ACG Valu-Fil 650 Solution Grade Gypsum 50 lb.Regular price $14.56Regular priceUnit price $0.29 per lb$21.90Sale price $14.56Grower Price -
MKP Mono-Potassium Phosphate 20 lbRegular price $47.28Regular priceUnit price $2.36 per lb$94.56Sale price $47.28Grower Price -
SOP 3IX 0-0-53 Crystalline Potassium Sulfate 4 lbRegular price $13.25Regular priceUnit price $3.31 per lb
$0.00Sale price $13.25 -
Ferti-Organic Soluble Fulvic Acid 69% - 50 lbRegular price $218.95Regular priceUnit price $4.38 per lb$304.10Sale price $218.95Grower Price -
Zinc EDTA Chelate | 15% Zn 1 lbRegular price $16.95Regular priceUnit price $16.95 per lb
$0.00Sale price $16.95 -
Metalosate Calcium Boron Organic 5 lb.Regular price $96.91Regular priceUnit price per$143.80Sale price $96.91Grower Price -
Ferti-Organic Soluble Humic Acid 0-0-7 - 50 lbRegular price $196.27Regular priceUnit price $3.93 per lb$290.00Sale price $196.27Grower Price -
Manganese EDTA Chelate | 13% Mn 4 lbRegular price $47.25Regular priceUnit price $11.81 per lb
$0.00Sale price $47.25 -
Solution Grade Gypsum 4 lb. | Calcium SulfateRegular price $3.50Regular priceUnit price $0.88 per lb
$0.00Sale price $3.50
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