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Nutrients & Supplements

Soil Amendments
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128
SUPERthrive Mag-Pro Nutritional Supplement 2-15-4 | 8oz - (Case of 12)
In Stock: 6302
$7.34 $10.99 -33%
Grotek Bud Fuel Pro 1-3-4 | 500mL - (Case of 6)
In Stock: 24
$7.33 $22.29 -67%
SUPERthrive Foliage-Pro Liquid Plant Food 9-3-6 | 8oz - (Case of 12)
Out of stock
$7.31 $11.99 -39%
SUPERthrive Grow Liquid Plant Food 7-9-5 | 8oz - (Case of 12)
In Stock: 336
$7.31 $11.99 -39%
Grotek Monster Grow Pro, 130 g
In Stock: 818
$7.23 $13.15 -45%
SUPERthrive ZYME 100% Enzyme Cleaner | 8oz - (Case of 12)
In Stock: 804
$7.22 $15.99 -55%
Growth Science Nutrients Rock Solid, 2.5 gal
In Stock: 2
$7.15 $149.99 -95%
Mad Farmer Nutrient UpTake Solution (N.U.T.S.), 1 gal
In Stock: 33
$7.08 $53.55 -87%
DaKine 420 Nitro Nutrients Base | 500g - (Case of 4)
In Stock: 7
$7.04 $28.99 -76%
DaKine 420 Nitro Nutrients Bloom | 500g - (Case of 4)
In Stock: 12
$7.04 $28.99 -76%
DaKine 420 Bio Minerals | 500g - (Case of 4)
In Stock: 16
$7.04 $28.99 -76%
DaKine 420 CalMag | 500g - (Case of 4)
In Stock: 4
$7.04 $28.99 -76%
DaKine 420 Sticky Icky Enzymes | 100g - (Case of 20)
In Stock: 20
$7.04 $28.99 -76%
DaKine 420 Nitro Nutrients Grow | 500g - (Case of 4)
In Stock: 8
$7.04 $28.99 -76%
Humboldt Nutrients Mayan Microzyme, 1 qt
In Stock: 6
$7.00 $105.99 -93%
Down to Earth Calcium 96 | 1lb - OMRI Listed - (Case of 6)
In Stock: 18
$6.99
Plant Success Organics Granular 3-1-2 | 4oz - Granules - (Case of 12)
In Stock: 765
$6.98 $8.65 -19%
HDI Ionic Bloom for Soil Premium Plant Nutrient 2-2-5 | 32oz
In Stock: 371
$6.97 $21.34 -67%
Grotek Heavy Bud Pro 1-0-3 | 500mL - (Case of 6)
In Stock: 12
$6.92 $20.99 -67%
Wiggle Worm Soil Builder Pure Worm Castings Organic Fertilizer | 4.5lb - OMRI Listed - (Case of 12)
In Stock: 1984
$6.85 $11.29 -39%
Wiggle Worm Soil Builder Pure Worm Castings Organic Fertilizer | 4.5lb - OMRI Listed - (Case of 10)
Out of stock
$6.85 $11.29 -39%
Olivia's Cloning Solution | 32oz (1qt) - (Case of 24)
In Stock: 24
$6.82 $13.95 -51%
Down to Earth Solution Grade Gypsum | 5lb - OMRI Listed - (Case of 5)
Out of stock
$6.72 $15.49 -57%
Grotek Biofuse | 100g - (Case of 12)
In Stock: 260
$6.52 $19.79 -67%
FoxFarm Bush Doctor Kangaroots, 1 qt
Out of stock
$6.49 $36.12 -82%
Key Grow Solutions Green Dragon 0-0-18 | 32oz - (Case of 14)
In Stock: 896
$6.47 $39.99 -84%
Key Grow Solutions Silver Rabbit 7-20-4 | 32oz - (Case of 14)
In Stock: 154
$6.47 $39.99 -84%
Growth Science Organics Grow, 1 gal
In Stock: 28
$6.44 $74.99 -91%
True Organic Bone Meal 7-7-0 | 3lb - Resealable Bag - Spring & Fall Application - Covers up to 61sq ft. - OMRI Listed - (Case of 6)
In Stock: 809
$6.36 $7.99 -20%
Grotek Vitamax Pro 1-1-1 | 500mL - (Case of 6)
In Stock: 6
$6.32 $14.59 -57%
Vegamatrix Amp-It, 1 gal
In Stock: 10
$6.31 $99.99 -94%
FoxFarm Bush Doctor Boomerang, 1 qt
Out of stock
$6.27 $34.83 -82%
Herculean Harvest, 1 qt
In Stock: 2
$6.27 $14.49 -57%
FoxFarm Bush Doctor Sledge Hammer, 1 qt
Out of stock
$6.18 $34.28 -82%
Down to Earth Langbeinite 0-0-22 | 1lb - OMRI Listed - (Case of 6)
In Stock: 102
$6.16 $10.29 -40%
Down to Earth Potassium Sulfate 0-0-50 | 1lb - OMRI Listed - (Case of 6)
In Stock: 192
$6.16 $10.29 -40%
Remo AstroFlower, 1 L
In Stock: 4
$6.10 $36.99 -84%
Soul Sensei Bloom, 2.5 gal
Out of stock
$6.10 $92.39 -93%
Soul Sensei Grow, 2.5 gal
In Stock: 147
$6.10 $92.39 -93%
Soul Sensei Micro, 1 gal
In Stock: 315
$6.10 $46.19 -87%
True Organic Liquid All-Purpose Plant Food | 16oz - OMRI Listed - (Case of 6)
In Stock: 90
$6.01 $8.99 -33%
True Organic Liquid Tomato & Vegetable Food 3-2-3 | 16oz - Concentrate - Use Every Two Weeks - Covers up to 30sq ft - OMRI Listed - (Case of 6)
In Stock: 168
$6.01 $8.99 -33%
True Organic Liquid Bloom Boost | 16oz - OMRI Listed - (Case of 6)
In Stock: 174
$6.01 $8.99 -33%
House & Garden Hydro A, 20 L
In Stock: 1
$5.98 $123.99 -95%
Grotek Blossom Blaster Pro 1-4-0 | 500mL - (Case of 6)
In Stock: 30
$5.94 $17.99 -67%
Grotek Cal Max 2-0-0 | 500mL - (Case of 6)
In Stock: 12
$5.86 $11.29 -48%
Down to Earth Shrimp Meal 6-6-0 | 2lb - OMRI Listed - (Case of 6)
In Stock: 72
$5.77 $11.99 -52%
Rock Fusion Grow Base Nutrient, 1 L
In Stock: 8
$5.69 $39.99 -86%
Crystal Burst, 1 qt
Out of stock
$5.64 $29.99 -81%
HDI Clonex Rooting Gel | 15ml - Single-Use Packet - (Case of 18)
In Stock: 2414
$5.37 $6.61 -19%
Grotek Vitamax Plus, 1 L
In Stock: 143
$5.37 $24.99 -79%
Soul Sensei Bloom, 1 gal
In Stock: 45
$5.31 $40.16 -87%
Soul Sensei Grow, 1 gal
In Stock: 203
$5.31 $40.16 -87%
Aptus Massboost, 250 ml
Out of stock
$5.23 $52.72 -90%
DaKine 420 Atomic Root Powder | 100g - (Case of 20)
In Stock: 40
$5.21 $21.49 -76%
DaKine 420 Shock & Awe Bloom Booster | 200g - (Case of 20)
In Stock: 40
$5.21 $21.49 -76%
Great White Granular 1 Mycorrhizal | 4oz - OMRI Listed - (Case of 24)
In Stock: 276
$5.19 $6.16 -16%
Down To Earth Mini Cactus Mix 2-4-8 | 1lb - (Case of 12)
In Stock: 582
$4.99
FoxFarm Bush Doctor Cal-Mag, 1 qt
Out of stock
$4.96 $27.56 -82%
Grotek Final Flush | 1L - Regular - (Case of 6)
In Stock: 42
$4.87 $16.49 -70%
Key Grow Solutions Red Royal 2-0-7 | 32oz - (Case of 14)
In Stock: 140
$4.86 $29.99 -84%
Key Grow Solutions White Royal 4-10-5 | 32oz - (Case of 14)
In Stock: 158
$4.86 $27.99 -83%
Grotek Cal Max 2-0-0 | 1L - (Case of 6)
In Stock: 54
$4.83 $14.69 -67%
Grotek Vitamax Plus 1-1-2 | 500mL - (Case of 6)
In Stock: 30
$4.82 $14.59 -67%
Down to Earth Kelp Meal 1-0.1-2 | 0.5lb - OMRI Listed
In Stock: 240
$4.79 $6.99 -31%
Down to Earth Gypsum | 1lb - OMRI Listed - (Case of 6)
In Stock: 72
$4.78 $6.99 -32%
Grotek Insta-Green 3-0-0 | 1L - (Case of 6)
In Stock: 132
$4.67 $14.29 -67%
Grotek Insta-Green 3-0-0 | 500mL - (Case of 6)
In Stock: 12
$4.67 $10.59 -56%
Humboldt Nutrients Mayan Microzyme, 8 oz
In Stock: 4
$4.62 $34.99 -87%
Mad Farmer Be One, 1 qt
Out of stock
$4.59 $31.49 -85%
Grotek Monster Grow Pro 18-36-1 | 130g
In Stock: 84
$4.57 $13.79 -67%
Aptus Breakout Powder, (5-Pack)
Out of stock
$4.53 $72.19 -94%
Grow More Mendocino Avalanche, 1 qt
Out of stock
$4.53 $27.43 -83%
Grotek Gro-Silic, 4 L
In Stock: 953
$4.44 $232.99 -98%
Key Grow Solutions Blue Butterfly 6-4-5 | 32oz - (Case of 14)
In Stock: 98
$4.32 $22.99 -81%
Aphrodite's Extraction, 1 qt
Out of stock
$4.28 $25.99 -84%
DaKine 420 Nitro Nutrients Base | 200g - (Case of 20)
In Stock: 80
$4.25 $17.49 -76%
DaKine 420 Nitro Nutrients Grow | 200g - (Case of 20)
In Stock: 40
$4.25 $17.49 -76%
FoxFarm Open Sesame, 1 lb
In Stock: 351
$4.14 $57.10 -93%
Rock Fusion Bloom Base Nutrient, 1 L
In Stock: 79
$4.14 $39.99 -90%
Roots Organics Buddha Bloom, 1 qt
Out of stock
$4.12 $24.93 -83%
Remo Magnifical, 1 L
In Stock: 9
$4.04 $22.99 -82%
Remo Grow, 20 L
In Stock: 25
$4.00 $197.99 -98%
Down to Earth All-Purpose Mix 4-6-2 | 1lb - OMRI Listed - (Case of 12)
In Stock: 1548
$3.89 $6.29 -38%
Down To Earth Rose & Flower Mix 4-8-4 | 1lb - (Case of 12)
In Stock: 924
$3.89 $6.29 -38%
Down to Earth Acid Mix 4-3-6 | 1lb - For Acid Soil Loving Plants - (Case of 12)
In Stock: 2664
$3.89 $6.29 -38%
Down to Earth Starter Mix 3-3-3 | 1lb - OMRI Listed - (Case of 12)
In Stock: 336
$3.89 $6.29 -38%
Down to Earth Vegetable Garden 4-4-4 | 1lb - OMRI Listed - (Case of 12)
In Stock: 1296
$3.89 $6.29 -38%
Down to Earth Citrus Mix 6-3-3 | 1lb - OMRI Listed - (Case of 12)
In Stock: 2496
$3.89 $6.29 -38%
FoxFarm Open Sesame, 6 oz
In Stock: 410
$3.89 $27.02 -86%
Down to Earth Fish Bone Meal 4-12-0 | 1lb - OMRI Listed - (Case of 12)
In Stock: 588
$3.78 $5.99 -37%
BioAG Ful-Humix | 100g - OMRI Listed - (Case of 24)
In Stock: 314
$3.75 $12.30 -70%
Hades Down, 1 qt
Out of stock
$3.75 $22.99 -84%
Zeus Juice, 1 qt
Out of stock
$3.75 $22.99 -84%
Down to Earth Blood Meal 12-0-0 | 0.5lb - OMRI Listed - (Case of 12)
In Stock: 684
$3.70 $5.99 -38%
Down to Earth Bat Guano 7-3-1 | 0.25lb - OMRI Listed - (Case of 12)
In Stock: 768
$3.70 $5.99 -38%
Down to Earth Alfalfa Meal 2.5-0.5-2.5 | 0.5lb - OMRI Listed
In Stock: 658
$3.69
DaKine 420 Foliar Science | 250g - (Case of 4)
In Stock: 40
$3.64 $14.99 -76%
Remo Nature's Candy, 1 L
In Stock: 5
$3.63 $26.99 -87%
Elite Resin D, 32 oz - A Hydrofarm Exclusive!
In Stock: 79
$3.59 $72.59 -95%
Growth Science Organics Root Magic, 1 qt
In Stock: 98
$3.55 $44.99 -92%
Remo Grow, 1 L
In Stock: 8
$3.55 $20.99 -83%
Primordial Solutions Rootamentary, 16 oz
In Stock: 22
$3.31 $45.99 -93%
Key Grow Solutions Purple Cat 3-0-0 | 32oz - (Case of 14)
In Stock: 154
$3.23 $17.99 -82%
Remo Micro, 1 L
In Stock: 37
$3.23 $22.99 -86%
Optic Foliar REV, 500 ml - (Case of 12)
In Stock: 19
$3.18 $71.99 -96%
Optic Foliar Watts, 500 ml - (Case of 12)
In Stock: 24
$3.18 $71.99 -96%
Down to Earth AZOMITE Slow Release Powder | 1lb - OMRI Listed - (Case of 12)
In Stock: 1868
$3.05 $4.39 -31%
Plant Success Organics Soluble 0.5-0.1-7 | 0.5oz
In Stock: 1106
$3.01 $3.69 -18%
Plant Success Organics Granular 3-1-2 | 1oz - Granules - (Case of 10)
In Stock: 650
$2.94 $3.63 -19%
Medusa's Magic, 1 qt
Out of stock
$2.85 $17.49 -84%
Pegasus Potion, 1 qt
Out of stock
$2.85 $17.49 -84%
Grotek Final Flush Blueberry, 1 L
In Stock: 433
$2.79 $15.19 -82%
Roots Organics Ancient Amber, 5 gal
In Stock: 73
$2.71 $188.99 -99%
Soul Sensei Micro, 1 qt
In Stock: 1095
$2.61 $19.79 -87%
Grotek Monster Grow Pro 18-36-1 | 20g
In Stock: 1
$2.60 $7.89 -67%
Grotek Monster Bloom 0-50-30 | 15ct - 0.7oz
In Stock: 9
$2.60 $7.89 -67%
Down to Earth Oyster Shell | 1lb - OMRI Listed - (Case of 12)
Out of stock
$2.48 $3.69 -33%
Down to Earth Granular Humic Acids | 1lb - OMRI Listed - (Case of 12)
Out of stock
$2.48 $3.69 -33%
Growth Science Nutrients Rock Solid, 1 qt
In Stock: 48
$2.48 $24.99 -90%
Grotek Gro-Silic, 250 ml
In Stock: 30
$2.48 $32.99 -92%
Growth Science Organics Grow, 2.5 gal
In Stock: 39
$2.43 $174.99 -99%
FoxFarm Cultivation Nation Micro, 1 pt
In Stock: 169
$2.31 $17.50 -87%
FoxFarm Bush Doctor Cal-Mag, 1 pt
In Stock: 646
$2.30 $17.38 -87%
Mad Farmer Mother Of All Bloom, 100g
Out of stock
$2.30 $16.05 -86%
Growth Science Nutrients Base A, 1 qt
In Stock: 10
$2.23 $17.99 -88%
Aptus Massboost, 100 ml
Out of stock
$2.14 $26.50 -92%
Olympus Up, 1 qt
In Stock: 12
$2.09 $16.49 -87%
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