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Fertilizers & Amendments

Soil health is vital to what you grow or treat, and organic fertilizers provide a much wider array of nutrients plus organic matter than standard N-P-K only fertilizers, to build healthier soil, stimulate biology and increase health, yields and aesthetics.

40 Results

Vitamins & Amino Acids by Microbe Life Hydroponics, 16 oz.
Vitamins & Amino Acids by Microbe Life Hydroponics, 32 oz.

Microbe Life Hydroponics Vitamins & Amino Acids

Microbe life

from $19.50

Unit price
per 

FoxFarm Bush Doctor Cal-Mag 1-0-0

FoxFarm

from $23.00

Unit price
per 

FoxFarm Tiger Bloom 2-8-4

FoxFarm

from $23.00

Unit price
per 

Humate Powder (Soluble) TeraVita SP-85

Humate Powder (Soluble) TeraVita SP-85

Organic Approach

from $22.75

Unit price
per 

FoxFarm Nutrient Trio (Quart)

FoxFarm Nutrient Trio (Quart)

GrowItNaturally.com

$70.75

Unit price
per 

FoxFarm Big Bloom 0-0.5-0.7

FoxFarm

from $21.25

Unit price
per 

FoxFarm Grow Big 6-4-4

FoxFarm

from $23.00

Unit price
per 

Mammoth P Nutrient Liberator

Mammoth Microbes

from $46.50

Unit price
per 

Nectar For The Gods Gaia Mania

Nectar For The Gods Gaia Mania

Nectar for the Gods

from $24.00

Unit price
per 

Liquid Organic Chilean Nitrate and Potash 5-0-3 Organic Approach

Liquid Organic Chilean Nitrate and Potash 5-0-3 Organic Approach

GrowItNaturally.com

from $39.50

Unit price
per 

Keyplex 350 DP (2.5 Gallon)

Keyplex 350 DP (2.5 Gallon)

GrowItNaturally.com

$86.00

Unit price
per 

Organic Approach Influence

Organic Approach Influence

Organic Approach

from $26.50

Unit price
per 

Quantum Growth 12 Humic Acid for Professionals

Quantum-12

GrowItNaturally.com

$36.25

Unit price
per 

Keyplex 350 OR

Keyplex 350 OR

KeyPlex

$99.00

Unit price
per 

Organic Approach Encourage 11-0-4 Organic Amino Acids

Encourage 11-0-4 Water-Soluble Fertilizer

GrowItNaturally.com

from $26.00

Unit price
per 

Humate Powder (Soluble) TeraVita SP-90

Humate Powder (Soluble) TeraVita SP-90

Organic Approach

from $26.75

Unit price
per