Skip to content
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.

SUPERthrive Original Vitamin Solution Nutrients SUPERthrive
$18.38 - $1,001.62
$18.38 - $1,001.62
$18.38 - $1,001.62
$18.38

SUPERthrive Original Vitamin Solution

SUPERthrive

SUPERthrive is a highly concentrated solution of vitamins, minerals and natural plant hormones. SUPERthrive invigorates all variety of greenery ...

View full details
$18.38 - $1,001.62
$18.38 - $1,001.62
$18.38 - $1,001.62
$18.38
Xtreme Gardening AZOS Root Booster/Growth Promoter Nutrients Xtreme Gardening
$21.45 - $859.00
$21.45 - $859.00
$21.45 - $859.00
$21.45

Xtreme Gardening AZOS Root Booster/Growth Promoter

Xtreme Gardening

Azos offers an innovative and economical method for helping plants acquire the nitrogen they need to grow stronger and healthier. The proprietary...

View full details
$21.45 - $859.00
$21.45 - $859.00
$21.45 - $859.00
$21.45
EZ-Clone Rooting Compound Nutrients Grow Light Central 2 oz
EZ-Clone Rooting Compound Nutrients Grow Light Central 1 oz
$12.95 - $42.99
$12.95 - $42.99
$12.95 - $42.99
$12.95

EZ-Clone Rooting Compound

EZ-Clone

EZ Clone Rooting Compound is a specially formulated rooting gel designed to initiate rapid, dense root growth in both softwood and hardwood cutting...

View full details
$12.95 - $42.99
$12.95 - $42.99
$12.95 - $42.99
$12.95
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 ...

View full details
$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...

View full details
$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...

View full details
$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...

View full details
$136.49 - $15,560.99
$136.49 - $15,560.99
$136.49 - $15,560.99
$136.49
FloraFlex Full Tilt Nutrients 25lb bag front label showing NPK 0-47-35 for late bloom ripening.
FloraFlex Full Tilt Nutrients packaging set with 25lb bag, 5lb pouch, and 1lb pouch.
12% Discount Inside until end of year
$4,526.32
$17.89 - $4,526.32
$4,526.32
$17.89 - $4,300.00
$17.89 - $4,300.00
$17.89

FloraFlex Nutrients Full Tilt Late Bloom Ripener

FloraFlex

Increase yields and bud quality with an easy-to-use nutrient formula that supports faster, stronger plant growth. When your plants hit late flower,...

View full details
$4,526.32
$17.89 - $4,526.32
$4,526.32
$17.89 - $4,300.00
$17.89 - $4,300.00
$17.89
Sold out
Xtreme Gardening CALCARB Foliar Booster Nutrients Xtreme Gardening
$22.99 - $22.99
$22.99
$22.99 - $22.99
$22.99

Xtreme Gardening CALCARB Foliar Booster

Xtreme Gardening

Add CalCarb to your indoor and outdoor gardening arsenal and create the perfect environment for your plants. CalCarb is a readily available source ...

View full details
$22.99 - $22.99
$22.99
$22.99 - $22.99
$22.99
Xtreme Gardening AZOS RED LIQUID Root Booster/Growth Promoter Nutrients Xtreme Gardening
$67.95 - $689.00
$67.95 - $689.00
$67.95 - $689.00
$67.95

Xtreme Gardening AZOS RED LIQUID Root Booster/Growth Promoter

Xtreme Gardening

Experience an improvement in plant establishment and accelerated plant growth with Xtreme Gardening AZOS Red Liquid, a naturally occurring nitro...

View full details
$67.95 - $689.00
$67.95 - $689.00
$67.95 - $689.00
$67.95
Silicium Silicic Acid Nutrients Silicium
Save up to $61.00 Save $0.00
$220.00 - $380.00
$220.00 - $380.00
$220.00
$197.00 - $319.00
$197.00 - $319.00
$197.00

Silicium Silicic Acid

Silicium

Silicium is a pure nutrient that has revolutionized the world of horticulture, giving plants the necessary building blocks for growth. When added t...

View full details
$220.00 - $380.00
$220.00 - $380.00
$220.00
$197.00 - $319.00
$197.00 - $319.00
$197.00
Save up to $61.00 Save $0.00