Organic Fertilizers

  • Organic N-P-K fertilizer mixes collection — natural nitrogen phosphorus potassium blends for professional growers

    Organic N-P-K Fertilizer Mixes

    Organic N-P-K Fertilizer Mixes — Complete Nutrition from Natural SourcesShop our full...

    Organic N-P-K Fertilizer Mixes

  • Organic Micro Nutrients

    Organic Micro Nutrients

    Custom Hydro is your go-to source for all organic trace element fertilizers...

    Organic Micro Nutrients

  • Organic nitrogen fertilizers collection — natural and OMRI listed nitrogen sources for professional growers

    Organic Nitrogen Fertilizers

    Boost Your Crops with Organic Nitrogen FertilizersCustom Hydro carries a full selection...

    Organic Nitrogen Fertilizers

  • Organic phosphorus fertilizers collection — natural phosphorus sources for root development and professional growers

    Organic Phosphorus Fertilizers

    Give Your Soil the Phosphorus Boost It NeedsCustom Hydro stocks a comprehensive...

    Organic Phosphorus Fertilizers

  • Organic potassium fertilizers collection — natural potassium sources for fruit quality and professional crop production

    Organic Potassium Fertilizers

    Supercharge Your Crops with Organic PotassiumCustom Hydro carries a premium selection of...

    Organic Potassium Fertilizers

  • Organic calcium fertilizers collection — natural calcium sources for cell wall strength and professional horticulture

    Organic Calcium Fertilizers

    Build Stronger Plants with Organic CalciumCustom Hydro stocks a large selection of...

    Organic Calcium Fertilizers

  • Organic magnesium fertilizers collection — natural magnesium sources for chlorophyll production and professional growers

    Organic Magnesium Fertilizers

    Replenish Magnesium Naturally for Healthier PlantsCustom Hydro stocks a curated selection of...

    Organic Magnesium Fertilizers

  • Organic sulfur fertilizers collection — natural sulfur sources for protein synthesis and professional crop nutrition

    Organic Sulfur Fertilizers

    Give Your Farm the Sulfur It Needs — OrganicallyCustom Hydro carries a...

    Organic Sulfur Fertilizers

  • Organic silicon fertilizers collection — natural silicon sources for plant strength and stress resistance

    Organic Silicon Fertilizers

    Unlock Plant Health Benefits with Organic SiliconCustom Hydro carries a curated selection...

    Organic Silicon Fertilizers

  • Kelpak liquid seaweed concentrate - 2.5 gal

    Organic Specialty Crop Fertilizers

    Unlock Your Crop's Full Potential — OrganicallyCustom Hydro carries a premium selection...

    Organic Specialty Crop Fertilizers

Dry Organic & Natural Mineral Fertilizers

Custom Hydro stocks a full range of dry organic and natural mineral fertilizers for commercial specialty crop, vegetable, and greenhouse production. From OMRI-listed organic inputs to natural mineral sources, our selection supports both certified organic and conventional programs.

Product Categories

  • Organic nitrogen sources — feather meal, blood meal, soybean meal
  • Organic phosphorus sources — bone meal, rock phosphate
  • Organic potassium sources — kelp meal, greensand, sulfate of potash
  • Natural mineral fertilizers — gypsum, lime, dolomite
  • Slow-release fertilizers for custom media blends
  • OMRI-listed inputs for certified organic production

Key Features

  • OMRI-listed options for certified organic production
  • Slow-release and fast-release options available
  • Suitable for soil, raised bed, and container production
  • Bulk pricing available — contact us for wholesale quotes

Ideal Applications

  • Commercial specialty crop and hemp production
  • Vegetable and greenhouse crop production
  • Greenhouse and container growing
  • Custom soil and media blending
  • Potassium Sulfate STANDARD FINES 20 LB Organic SOP 0-0-50 Standard Fines | 20 lb
    Organic SOP 0-0-50 Standard Fines | 20 lb
    Organic SOP 0-0-50 Standard Fines | 20 lb
    $50.80
    $0.00 $50.80
  • Sigma 5-3-2 Bio With Value-Added Biologicals Sigma 5-3-2 Bio Organic Fertilizer 50 lb
    Sigma 5-3-2 Bio Organic Fertilizer 50 lb
    Grower Price
    Sigma 5-3-2 Bio Organic Fertilizer 50 lb
    $25.71
    $38.66 $25.71
    Grower Price
  • Fertoz Organic POWDERED Rock Phosphate Fertilizer Fertoz Organic POWDERED Rock Phosphate Fertilizer
    Fertoz Organic POWDERED Rock Phosphate Fertilizer
    Sold out
    Fertoz Organic POWDERED Rock Phosphate Fertilizer
    $32.04
    $44.50 $32.04
    Sold out
  • HYSHIELD 20L
    HYSHIELD 20L
    Grower Price
    HYSHIELD 20L
    $126.07
    $157.99 $126.07
    Grower Price
  • Diamond K Solution Grade Ultra Fines Sulfate Of Potash 0-0-50 Sulfate of Potash Ultra Fines | 0-0-50 | 50 lb
    Sulfate of Potash Ultra Fines | 0-0-50 |...
    Grower Price
    Sulfate of Potash Ultra Fines | 0-0-50 |...
    $47.88
    $53.20 $47.88
    $0.96 lb
    Grower Price
  • Roots Organics Terp Tea Grow 3lb
    Roots Organics Terp Tea Grow 3 lb
    Grower Price
    Roots Organics Terp Tea Grow 3 lb
    $16.37
    $20.51 $16.37
    Grower Price
  • Roots Organics Terp Tea Bloom 9lb
    Roots Organics Terp Tea Bloom 9 lb
    Grower Price
    Roots Organics Terp Tea Bloom 9 lb
    $39.50
    $53.99 $39.50
    Grower Price
  • Agrihusta ORGANIC 3-0-9 Potassium-Nitrate fertilizer (5 GAL) Multiple containers of AgriHusta liquid complex fertilizers with green labels.
    AgriHusta Organic Liquid Fertilizer NPK 3-0-9 (Potassium Nitrate)...
    Grower Price
    AgriHusta Organic Liquid Fertilizer NPK 3-0-9 (Potassium Nitrate)...
    $67.00
    $109.84 $67.00
    $12.69 gal
    Grower Price
  • Roots Organics Terp Tea Grow 9lb
    Roots Organics Terp Tea Grow 9 lb
    Grower Price
    Roots Organics Terp Tea Grow 9 lb
    $39.50
    $53.99 $39.50
    Grower Price
  • Phos Sea Bird 3lb Guano POWDER 0-12-0
    Roots Organics Seabird Guano Powder 3 lb
    Grower Price
    Roots Organics Seabird Guano Powder 3 lb
    $10.44
    $12.94 $10.44
    Grower Price
  • Azomite 1 lb.
    Azomite 1 lb.
    Azomite 1 lb.
    $5.25
    $0.00 $5.25
  • Soluble Fulvic Acid 20 lb. Ferti-Organic Soluble Fulvic Acid 69% - 15 lb
    Ferti-Organic Soluble Fulvic Acid 69% - 15 lb
    Ferti-Organic Soluble Fulvic Acid 69% - 15 lb
    $120.00
    $0.00 $120.00
    $8.00 lb
  • Roots Organics Terp Tea Bloom Booster 40lb
    Roots Organics Terp Tea Bloom Booster 40 lb
    Grower Price
    Roots Organics Terp Tea Bloom Booster 40 lb
    $281.46
    $383.39 $281.46
    Grower Price
  • Nitrogen Bat Guano 9 Lb 9-3-1
    Nitrogen Bat Guano 9 Lb 9-3-1
    Grower Price
    Nitrogen Bat Guano 9 Lb 9-3-1
    $31.60
    $43.19 $31.60
    Grower Price
  • Potassium Sulfate STANDARD FINES 40 LB Organic SOP 0-0-50 Standard Fines | 40 lb
    Organic SOP 0-0-50 Standard Fines | 40 lb
    Organic SOP 0-0-50 Standard Fines | 40 lb
    $80.91
    $0.00 $80.91
  • Organic Bone Meal Organic Bone Meal
    Organic Bone Meal
    Organic Bone Meal
    From $7.75
    $0.00 From $7.75
    $1.94 lb

Serving Arkansas, Kansas, Missouri and Oklahoma. Shipping Nationwide! Wholesale to the public!