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
  • Roots Organics Terp Tea Bloom Booster 9 lb
    Roots Organics Terp Tea Bloom Booster 9 lb
    Grower Price
    Roots Organics Terp Tea Bloom Booster 9 lb
    $74.12
    $91.79 $74.12
    Grower Price
  • Roots Organics Terp Tea Bloom Booster 3lb
    Roots Organics Terp Tea Bloom Booster 3 lb
    Grower Price
    Roots Organics Terp Tea Bloom Booster 3 lb
    $30.32
    $34.56 $30.32
    Grower Price
  • Allganic® Nitrogen Plus 15-0-2, 50lb bag
    Allganic® Nitrogen Plus 15-0-2, 50lb bag
    Grower Price
    Allganic® Nitrogen Plus 15-0-2, 50lb bag
    $65.84
    $99.00 $65.84
    Grower Price
  • AGRIHUSTA ORGANIC CALCIUM-NITRATE FERTILIZER NPK 3-0-0 +Ca (5 GAL)
    AGRIHUSTA LIQUID CALCIUM-NITRATE FERTILIZER NPK 3-0-0 +Ca (5...
    Grower Price
    AGRIHUSTA LIQUID CALCIUM-NITRATE FERTILIZER NPK 3-0-0 +Ca (5...
    $95.00
    $125.00 $95.00
    Grower Price
  • Garden-tone 3-4-4 18 lb. bag
    Garden-tone 3-4-4 18 lb. bag
    Garden-tone 3-4-4 18 lb. bag
    $21.10
    $0.00 $21.10
  • Tomato-tone 3-4-6 4 lb.
    Tomato-tone 3-4-6 4 lb.
    Tomato-tone 3-4-6 4 lb.
    $7.58
    $0.00 $7.58

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