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Free Shipping on most orders over $175 | Sales Tax in NJ only
Free Shipping on most orders over $175 | Sales Tax in NJ only

Plant Supplements and Additives

Additives aren’t just extras. They’re powerful growth enhancers that unlock your plant's full potential. Our collection features plant supplements like L‑amino acid boosters, root enhancers, bloom stimulators, enzymes, and microbial inoculants proven to enhance nutrient uptake, support root resilience, and increase flower density.

Use them alongside your base nutrients to push genetics, reduce stress, and simplify feeding routines.

Want to keep your nutrients perfectly blended? Explore our nutrient aerators, mixers, and pumps collection.

HEAVY 16 Veg A 4-0-1 1 Gallon
HEAVY 16 Veg A 4-0-1 Nutrients HEAVY 16
$19.10 - $2,320.49
$19.10 - $2,320.49
$19.10 - $2,320.49
$19.10

HEAVY 16 Veg A 4-0-1

HEAVY 16

HEAVY 16 Veg A • Improves overall plant nutrition• Improves soil/nutrient conditions for better crop yield• Optimizes soil/nutrient conditions for ...

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$19.10 - $2,320.49
$19.10 - $2,320.49
$19.10 - $2,320.49
$19.10
HEAVY 16 Veg B 1-2-5 1 Gallon
HEAVY 16 Veg B 1-2-5 Nutrients HEAVY 16
$19.10 - $2,320.49
$19.10 - $2,320.49
$19.10 - $2,320.49
$19.10

HEAVY 16 Veg B 1-2-5

HEAVY 16

HEAVY 16 Veg B • Improves overall plant nutrition• Improves soil/nutrient conditions for better crop yield• Optimizes soil/nutrient conditions for ...

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$19.10 - $2,320.49
$19.10 - $2,320.49
$19.10 - $2,320.49
$19.10
HEAVY 16 Bud B 1 Gallon
HEAVY 16 Bud B 1-3-6 Nutrients HEAVY 16
$19.10 - $2,320.49
$19.10 - $2,320.49
$19.10 - $2,320.49
$19.10

HEAVY 16 Bud B 1-3-6

HEAVY 16

HEAVY 16 BUD B • Improves overall plant nutrition• Improves soil/nutrient conditions for better crop yield• Optimizes soil/nutrient conditions for ...

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$19.10 - $2,320.49
$19.10 - $2,320.49
$19.10 - $2,320.49
$19.10
HEAVY 16 Bud A 1 Gallon
HEAVY 16 Bud A 2-0-3 Nutrients HEAVY 16
$19.10 - $2,320.49
$19.10 - $2,320.49
$19.10 - $2,320.49
$19.10

HEAVY 16 Bud A 2-0-3

HEAVY 16

HEAVY 16 BUD A • Improves overall plant nutrition• Improves soil/nutrient conditions for better crop yield• Optimizes soil/nutrient conditions for ...

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$19.10 - $2,320.49
$19.10 - $2,320.49
$19.10 - $2,320.49
$19.10
HEAVY 16 Roots Quart (32 oz)
HEAVY 16 Roots 0.7-1-2 Nutrients HEAVY 16
$136.49 - $15,560.99
$136.49 - $15,560.99
$136.49 - $15,560.99
$136.49

HEAVY 16 Roots 0.7-1-2

HEAVY 16

HEAVY 16 Roots • Improved overall plant nutrition• Improves soil/nutrient conditions for root growth• Support soil conditions for greater root mass...

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$136.49 - $15,560.99
$136.49 - $15,560.99
$136.49 - $15,560.99
$136.49
HEAVY 16 Finish 0-0-1 1 Gallon
HEAVY 16 Finish 0-0-1 Nutrients HEAVY 16
$40.94 - $4,231.49
$40.94 - $4,231.49
$40.94 - $4,231.49
$40.94

HEAVY 16 Finish 0-0-1

HEAVY 16

HEAVY 16 Finish • Improves overall plant nutrition• Improves efficiency of applied fertilizers• Supports conditions for better plant establishment ...

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$40.94 - $4,231.49
$40.94 - $4,231.49
$40.94 - $4,231.49
$40.94
HEAVY 16 Foliar 1 Gallon
HEAVY 16 Foliar 1-0-2 Nutrients HEAVY 16
$68.24 - $955.49
$68.24 - $955.49
$68.24 - $955.49
$68.24

HEAVY 16 Foliar 1-0-2

HEAVY 16

HEAVY 16 Foliar • Improves overall plant nutrition• Corrects calcium/magnesium-based plant disorders• Improves tolerance of abiotic stress In our q...

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$68.24 - $955.49
$68.24 - $955.49
$68.24 - $955.49
$68.24
HEAVY 16 Prime 1 Gallon
HEAVY 16 Prime 0-0-3 Nutrients HEAVY 16
$122.84 - $11,738.99
$122.84 - $11,738.99
$122.84 - $11,738.99
$122.84

HEAVY 16 Prime 0-0-3

HEAVY 16

HEAVY 16 Prime • Improves overall plant nutrition• Improves soil/nutrient conditions for better crop yield• Supports microbial populations• Suppor...

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$122.84 - $11,738.99
$122.84 - $11,738.99
$122.84 - $11,738.99
$122.84
HEAVY 16 Fire Quart (32 oz)
HEAVY 16 Fire 1-10-16 Nutrients HEAVY 16
$136.49 - $15,560.99
$136.49 - $15,560.99
$136.49 - $15,560.99
$136.49

HEAVY 16 Fire 1-10-16

HEAVY 16

HEAVY 16 Fire • Improves overall plant nutrition• Improves soil/nutrient conditions for better crop yield• Provides organic matter• Improves soil c...

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$136.49 - $15,560.99
$136.49 - $15,560.99
$136.49 - $15,560.99
$136.49