Shopping as a Business? Create a GrowGen Advantage account for access to savings & make your business run smoother than ever before!
X
Cart 0
Sign UpLogin
Toggle Nav

Global Grower Community, Premium Service, Broadest Selection of the Best Brands

(800) 935-8420
Menu
Account

Supplements & Additives

Set Descending Direction

1120 items

Page
per page
View as Grid List
  1. -30%
    Athena PK 5 Gallon
    Regular Price $200.00 Special Price $140.00
  2. -30%
    Athena PK 1 Gallon
    Regular Price $45.00 Special Price $31.50
  3. -4%
    Plant Success King Crab, 32 oz.
    Regular Price $99.99 Special Price $96.18
  4. -3%
    Plant Success King Crab, 1 gal
    Regular Price $319.99 Special Price $308.86
  5. -45%
    Mills Nutrients Ultimate PK, 200 Liter
    Regular Price $8,999.99 Special Price $4,935.78
  6. -44%
    Mills Nutrients Start-R, 200 Liter
    Regular Price $8,999.99 Special Price $5,016.87
  7. -20%
    Cultured Solutions Bud Booster Mid Gallon
    Regular Price $79.95 Special Price $64.11
  8. -20%
    House and Garden Drip Clean - 1 Liter
    Regular Price $62.99 Special Price $50.49
  10. -30%
    Free Shipping
    Power Si Granular 10 kg
    Regular Price $840.00 Special Price $588.00
  11. -30%
    Free Shipping
    Power Si Bloom 500 ml
    Regular Price $75.00 Special Price $52.50
  12. -30%
    Free Shipping
    Power Si Bloom 5 Liter
    Regular Price $500.00 Special Price $350.00
  13. -30%
    Free Shipping
    Power Si Bloom 20 Liter
    Regular Price $1,800.00 Special Price $1,260.00
  14. -30%
    Free Shipping
    Power Si Bloom 1 Liter
    Regular Price $130.00 Special Price $91.00
  15. -27%
    Roots Organics Terp Tea Bloom Booster, 3 lb
    Regular Price $34.56 Special Price $25.37
  16. -72%
    FLORALICIOUS PLUS 2.5GAL
    Regular Price $1,297.44 Special Price $357.32
  17. -33%
    FoxFarm Bush Doctor Cal-Mag, 1 qt.
    Regular Price $26.75 Special Price $17.91
  18. -20%
    Cutting Edge Solutions Uncle John's Blend, 6 gal (OREGON ONLY)
    Regular Price $420.99 Special Price $334.98
  19. -20%
    Cutting Edge Solutions Uncle John's Blend, 2.5 gal (OREGON ONLY)
    Regular Price $210.99 Special Price $168.36
  20. -3%
    Cutting Edge Solutions Uncle John's Blend, 1 gal (OREGON ONLY)
    Regular Price $103.99 Special Price $100.84
  21. -3%
    Cutting Edge Solutions Uncle John's Blend, 1 qt. (OREGON ONLY)
    Regular Price $34.99 Special Price $33.90
Set Descending Direction

1120 items

Page
per page
View as Grid List
Filter
Shopping Options
Category
Supplements & Additives
  1. Amino / Vitamins
  2. Silica
  3. Seaweed / Kelp
  4. Root Stimulator
  5. Guano
  6. Foliar Spray
  7. Flushing Agent
  8. Flower Hardener
  9. Fish Based
  10. Enzymes
  11. Carbohydrates/Sweeteners
  12. Cal-Mag
  13. Bloom Boosters
  14. Wetting Agent

BUY ONLINE,
PICK UP IN STORE

Available at Participating Locations.

Brand

OVERSTOCK

GROWPRO CHANNEL