Organic Micro Nutrients

Custom Hydro is your go-to source for all organic trace element fertilizers specifically designed for organic farmers and gardeners. Our wide selection includes Azomite, BioAg TM-7, Borax, Boric acid, Copper Sulfate, Iron Sulfate, Manganese Sulfate, NutraMins (montmorllonite), and Zinc Sulfate.

Nourish your soil with essential trace elements
Enhance plant growth and health naturally
Cultivate vibrant and sustainable gardens

Iron Sulfate Hi Yield 4 lb.

Iron Sulfate Hi Yield 4 lb.

$10.30

In Stock.

Iron Sulfate Heptahydrate 1 lb.

Iron Sulfate Heptahydrate 1 lb.

$4.75

In Stock.

Iron Sulfate Heptahydrate powder 50 lb.

Iron Sulfate Heptahydrate powder 50 lb.

$39.05

In Stock.

Iron Sulfate Heptahydrate 4 lb. jar

Iron Sulfate Heptahydrate 4 lb. jar

$7.90

In Stock.

Manganese Sulfate fertilizer 1 lb.

Manganese Sulfate fertilizer 1 lb.

$5.00

In Stock.

Manganese Sulfate fertilizer 4 lb.

Manganese Sulfate fertilizer 4 lb.

$11.70

In Stock.

Manganese Sulfate fertilizer 8 oz.

Manganese Sulfate fertilizer 8 oz.

$3.50

In Stock.

Manganese Sulfate Soluble Fertilizer Powder 55 lb.

Manganese Sulfate Soluble Fertilizer Powder 55 lb.

$111.20

In Stock.

Copper Sulfate fertilizer 1 lb.

Copper Sulfate fertilizer 1 lb.

$10.15

In Stock.

Copper Sulfate 8 oz.

Copper Sulfate 8 oz.

$8.50

In Stock.

Copper Sulfate fertilizer 4 lb.

Copper Sulfate fertilizer 4 lb.

$21.00

In Stock.

Copper Sulfate fertilizer 50 lb. (CHEM ONE FINES)

Copper Sulfate fertilizer 50 lb. (CHEM ONE FINES)

$176.39

In Stock.

Copper Sulfate fertilizer 20 lb.

Copper Sulfate fertilizer 20 lb.

$88.42

Back Order.

Sodium Molybdate 8 oz.

Sodium Molybdate 8 oz.

$14.20

In Stock.

Sodium Molybdate 1 lb.

Sodium Molybdate 1 lb.

$23.70

In Stock.

Sodium Molybdate fertilizer 4 lb.

Sodium Molybdate fertilizer 4 lb.

$83.50

In Stock.

HI-YIELD Zinc Sulfate granular fertilizer 4 lb.

HI-YIELD Zinc Sulfate granular fertilizer 4 lb.

$27.70

In Stock.

Zinc Sulfate fertilizer 1 lb.

Zinc Sulfate fertilizer 1 lb.

$5.00

In Stock.

Zinc Sulfate fertilizer 4 lb.

Zinc Sulfate fertilizer 4 lb.

$13.00

In Stock.

Maximo 360 Soluble Zinc Sulfate fertilizer 50 lb.

Maximo 360 Soluble Zinc Sulfate fertilizer 50 lb.

$84.84

In Stock.

Zinc Sulfate fertilizer 20lb.

Zinc Sulfate fertilizer 20lb.

$31.00

In Stock.

Solubor boron fertilizer 8 oz.

Solubor boron fertilizer 8 oz.

$5.00

In Stock.

Solubor boron fertilizer 1 lb.

Solubor boron fertilizer 1 lb.

$11.55

In Stock.

Solubor boron fertilizer 4 lb.

Solubor boron fertilizer 4 lb.

$21.40

In Stock.

Solubor boron fertilizer 50 lb.

Solubor boron fertilizer 50 lb.

$107.32

In Stock.

Solubor boron fertilizer 20 lb.

Solubor boron fertilizer 20 lb.

$70.50

In Stock.

Azomite 44 lb. bag

Azomite 44 lb. bag

$39.75

In Stock.

Azomite 1 lb.

$5.25

In Stock.

Azomite 4 lb.

Azomite 4 lb.

$8.10

In Stock.

Azomite 20 lb.

$26.40

In Stock.

Fertibor 50 lb.

Fertibor 50 lb.

$86.99

*Special Order Item

Fertibor 1 lb. bag

Fertibor 1 lb. bag

$6.40

In Stock.

Fertibor 4 lb. bag

Fertibor 4 lb. bag

$13.65

In Stock.

Iron Sulfate 30% iron fertilizer

Iron Sulfate 30% iron fertilizer

$39.90

In Stock.

Maximo 361 Mini-Granule Zinc Sulfate Fertilizer 50 lb.

Maximo 361 Mini-Granule Zinc Sulfate Fertilizer 50 lb.

$59.68

In Stock.

Maximo 363 Maxi-Granule Zinc Sulfate Fertilizer 50 lb. BAG

Maximo 363 Maxi-Granule Zinc Sulfate Fertilizer 50 lb. BAG

$68.65

Back Order.

Manganese Sulfate fertilizer 20 lb.

Manganese Sulfate fertilizer 20 lb.

$33.00

In Stock.

Copper Sulfate fertilizer 50 lb. (SMALL GRANULE)

Copper Sulfate fertilizer 50 lb. (SMALL GRANULE)

$209.75

, ships within one week

Sodium Molybdate fertilizer 20 lb. pail

Sodium Molybdate fertilizer 20 lb. pail

$409.03

In Stock.

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