Specialty Crop Fertilizers

Professional-Grade Fertilizers Formulated for Specialty Crops

Give your plants the precise nutrition they need at every stage of growth. Our curated collection of dry, water-soluble fertilizers is trusted by commercial cultivators and serious home growers alike — delivering consistent, measurable results from propagation to harvest.

Whether you're building a custom nutrient formula tailored to your specific grow facility or looking for a ready-to-use commercial blend, every product in this collection is fully soluble and engineered for maximum nutrient uptake in soil, coco, and hydroponic systems.

Why Choose Our Specialty Crop Fertilizers

  • Optimized NPK ratios — formulas designed specifically for veg, bloom, and finishing stages
  • Fully water-soluble — dissolves completely with no residue, compatible with drip, NFT, and hand-watering
  • Maximize yield and quality — support secondary metabolite development with balanced macro and micronutrients
  • Flexible options — individual components for custom formulation or complete blends for commercial cultivation
  • Fast shipping — orders ship quickly and arrive safely

Ideal For

  • Indoor and greenhouse specialty crop cultivation
  • Hydroponic, coco coir, and soil-based systems
  • Commercial licensed facilities building custom feed programs
  • Veg, bloom, and finishing stages
  • Sulfate of Potash 0-0-51 Greenhouse Grade 4 lb. Sulfate of Potash 0-0-51 GG 4 lb.
    Sulfate of Potash 0-0-51 GG 4 lb.
    Sulfate of Potash 0-0-51 GG 4 lb.
    $13.82
    $0.00 $13.82
    $3.46 lb
  • Solubor boron fertilizer 20.5% B 8 oz resealable jar with Custom Hydro Nutrients logo Solubor boron fertilizer 8 oz.
    Solubor Boron Fertilizer | 20.5% B 8 oz
    Solubor Boron Fertilizer | 20.5% B 8 oz
    $5.00
    $0.00 $5.00
  • Ferti-Corn Steep Powder 6-7-7 fertilizer 50lb. Ferti-Corn Steep Powder 6-7-7 Organic NPK - 50 lb
    Ferti-Corn Steep Powder 6-7-7 Organic NPK - 50...
    Grower Price
    Ferti-Corn Steep Powder 6-7-7 Organic NPK - 50...
    $139.80
    $210.25 $139.80
    $2.80 lb
    Grower Price
  • Magnesium Sulfate 40 lb. A pile of Magriculture magnesium sulfate heptahydrate rhombic crystals.
    Magnesium Sulfate Heptahydrate (Epsom Salt) - 40 lb
    Magnesium Sulfate Heptahydrate (Epsom Salt) - 40 lb
    $28.15
    $0.00 $28.15
    $0.70 lb
  • Ferti-Organic Soluble Seaweed Extract 0-0-14 - 1 lb Ferti-Organic Soluble Seaweed Extract 0-0-14 - 1 lb
    Ferti-Organic Soluble Seaweed Extract 0-0-14 - 1 lb
    Ferti-Organic Soluble Seaweed Extract 0-0-14 - 1 lb
    $10.80
    $0.00 $10.80
    $10.80 lb
  • Kelpak liquid seaweed concentrate - 2.5 gal Kelpak cold cellburst process kelp extract.
    Kelpak Liquid Seaweed Concentrate | 0-0-1
    Kelpak Liquid Seaweed Concentrate | 0-0-1
    From $127.42
    From $127.42
    $50.97 gal
  • Solubor boron fertilizer 50 lb. Solubor boron fertilizer 20.5% B infographic showing fertigation, hydroponic and foliar applications
    Solubor Boron Fertilizer | 20.5% B 50 lb...
    Grower Price
    Solubor Boron Fertilizer | 20.5% B 50 lb...
    $107.32
    $177.00 $107.32
    $2.15 lb
    Grower Price
  • Zinc EDTA chelate 15% Zn 4 lb white resealable screw-top jar with Custom Hydro Nutrients logo Zinc EDTA 14% 4 lb.
    Zinc EDTA Chelate | 15% Zn 4 lb
    Zinc EDTA Chelate | 15% Zn 4 lb
    $49.80
    $0.00 $49.80
    $12.45 lb
  • Sprint 330 10% Iron DTPA fertilizer 50 lb.
    Sprint 330 10% Iron DTPA fertilizer 50 lb.
    Sold out
    Sprint 330 10% Iron DTPA fertilizer 50 lb.
    $798.87
    $958.90 $798.87
    $15.98 lb
    Sold out
  • Solution Grade Gypsum 20 lb brown box — calcium sulfate fertilizer by Custom Hydro Nutrients Calcium Sulfate, Solution Grade GYPSUM 20 lb.
    Solution Grade Gypsum 20 lb. | Calcium Sulfate
    Solution Grade Gypsum 20 lb. | Calcium Sulfate
    $12.47
    $0.00 $12.47
    $0.62 lb
  • PeKacid 0-60-20 fertilizer 4 lb.
    PeKacid 0-60-20 fertilizer 4 lb.
    PeKacid 0-60-20 fertilizer 4 lb.
    $22.00
    $0.00 $22.00
    $5.50 lb
  • Urea 46-0-0 fertilizer low biuret 50 lb. Urea 46-0-0 fertilizer low biuret 50 lb.
    Urea 46-0-0 fertilizer low biuret 50 lb.
    Grower Price
    Urea 46-0-0 fertilizer low biuret 50 lb.
    $39.27
    $54.54 $39.27
    Grower Price
  • Bloom Formula 0-20-42 fertilizer 1 lb.
    MasterBlend 0-20-42 Bloom Formula 1 lb.
    Grower Price
    MasterBlend 0-20-42 Bloom Formula 1 lb.
    $8.52
    $16.99 $8.52
    $8.52 lb
    Grower Price
  • Magnesium Nitrate 4 lb.
    Magnesium Nitrate 4 lb.
    Magnesium Nitrate 4 lb.
    $12.16
    $0.00 $12.16
    $3.04 lb
  • Potassium Nitrate RECI, 4 lb. jar
    Haifa Multi-K RECI Potassium Nitrate 4 lb
    Grower Price
    Haifa Multi-K RECI Potassium Nitrate 4 lb
    $15.18
    $32.00 $15.18
    Grower Price
  • Zinc Sulfate fertilizer 1 lb.
    Zinc Sulfate fertilizer 1 lb.
    Zinc Sulfate fertilizer 1 lb.
    $5.00
    $0.00 $5.00

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