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Nutrients & Supplements

Soil Amendments
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128
DaKine 420 Nitro Nutrients Grow | 500g - (Case of 4)
In Stock: 8
$7.20 $28.99 -75%
Humboldt Nutrients Mayan Microzyme, 1 qt
In Stock: 6
$7.16 $105.99 -93%
Plant Success Organics Granular 3-1-2 | 4oz - Granules - (Case of 12)
In Stock: 621
$7.14 $8.65 -17%
HDI Ionic Bloom for Soil Premium Plant Nutrient 2-2-5 | 32oz
In Stock: 383
$7.13 $21.34 -67%
Grotek Heavy Bud Pro 1-0-3 | 500mL - (Case of 6)
In Stock: 12
$7.07 $20.99 -66%
Wiggle Worm Soil Builder Pure Worm Castings Organic Fertilizer | 4.5lb - OMRI Listed - (Case of 12)
In Stock: 497
$7.01 $11.29 -38%
Wiggle Worm Soil Builder Pure Worm Castings Organic Fertilizer | 4.5lb - OMRI Listed - (Case of 10)
Out of stock
$7.01 $11.29 -38%
Down to Earth Calcium 96 | 1lb - OMRI Listed - (Case of 6)
In Stock: 93
$6.99
Olivia's Cloning Solution | 32oz (1qt) - (Case of 24)
In Stock: 24
$6.98 $13.95 -50%
Down to Earth Solution Grade Gypsum | 5lb - OMRI Listed - (Case of 5)
Out of stock
$6.87 $15.49 -56%
Grotek Biofuse | 100g - (Case of 12)
In Stock: 260
$6.67 $19.79 -66%
FoxFarm Bush Doctor Kangaroots, 1 qt
In Stock: 34
$6.64 $36.12 -82%
Key Grow Solutions Green Dragon 0-0-18 | 32oz - (Case of 14)
In Stock: 896
$6.62 $39.99 -83%
Key Grow Solutions Silver Rabbit 7-20-4 | 32oz - (Case of 14)
In Stock: 154
$6.62 $39.99 -83%
Growth Science Organics Grow, 1 gal
In Stock: 28
$6.59 $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: 899
$6.51 $7.99 -19%
Grotek Vitamax Pro 1-1-1 | 500mL - (Case of 6)
In Stock: 6
$6.47 $14.59 -56%
Vegamatrix Amp-It, 1 gal
In Stock: 12
$6.45 $99.99 -94%
FoxFarm Bush Doctor Boomerang, 1 qt
In Stock: 4
$6.41 $34.83 -82%
FoxFarm Bush Doctor Sledge Hammer, 1 qt
Out of stock
$6.32 $34.28 -82%
Down to Earth Langbeinite 0-0-22 | 1lb - OMRI Listed - (Case of 6)
In Stock: 113
$6.30 $10.29 -39%
Down to Earth Potassium Sulfate 0-0-50 | 1lb - OMRI Listed - (Case of 6)
In Stock: 192
$6.30 $10.29 -39%
Remo AstroFlower, 1 L
In Stock: 11
$6.24 $36.99 -83%
Soul Sensei Bloom, 2.5 gal
In Stock: 86
$6.24 $92.39 -93%
Soul Sensei Grow, 2.5 gal
In Stock: 147
$6.24 $92.39 -93%
Soul Sensei Micro, 1 gal
In Stock: 317
$6.24 $46.19 -86%
True Organic Liquid All-Purpose Plant Food | 16oz - OMRI Listed - (Case of 6)
In Stock: 132
$6.14 $8.99 -32%
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: 174
$6.14 $8.99 -32%
True Organic Liquid Bloom Boost | 16oz - OMRI Listed - (Case of 6)
In Stock: 174
$6.14 $8.99 -32%
House & Garden Hydro A, 20 L
In Stock: 1
$6.12 $123.99 -95%
Grotek Blossom Blaster Pro 1-4-0 | 500mL - (Case of 6)
In Stock: 30
$6.08 $17.99 -66%
Grotek Vitamax Plus, 1 L
In Stock: 185
$6.05 $24.99 -76%
Grotek Cal Max 2-0-0 | 500mL - (Case of 6)
In Stock: 12
$5.99 $11.29 -47%
Down to Earth Shrimp Meal 6-6-0 | 2lb - OMRI Listed - (Case of 6)
In Stock: 72
$5.90 $11.99 -51%
Bloom Khaos, 1 qt
In Stock: 1
$5.83 $34.99 -83%
Rock Fusion Grow Base Nutrient, 1 L
In Stock: 11
$5.82 $39.99 -85%
Crystal Burst, 1 qt
In Stock: 102
$5.76 $29.99 -81%
HDI Clonex Rooting Gel | 15ml - Single-Use Packet - (Case of 18)
In Stock: 2018
$5.49 $6.61 -17%
Soul Sensei Bloom, 1 gal
In Stock: 47
$5.43 $40.16 -86%
Soul Sensei Grow, 1 gal
In Stock: 205
$5.43 $40.16 -86%
Aptus Massboost, 250 ml
In Stock: 2
$5.35 $52.72 -90%
DaKine 420 Atomic Root Powder | 100g - (Case of 20)
In Stock: 40
$5.33 $21.49 -75%
DaKine 420 Shock & Awe Bloom Booster | 200g - (Case of 20)
In Stock: 40
$5.33 $21.49 -75%
Great White Granular 1 Mycorrhizal | 4oz - OMRI Listed - (Case of 24)
In Stock: 204
$5.31 $6.16 -14%
FoxFarm Bush Doctor Cal-Mag, 1 qt
In Stock: 125
$5.08 $27.56 -82%
Down To Earth Mini Cactus Mix 2-4-8 | 1lb - (Case of 12)
In Stock: 120
$4.99
Grotek Final Flush | 1L - Regular - (Case of 6)
In Stock: 42
$4.98 $16.49 -70%
Key Grow Solutions Red Royal 2-0-7 | 32oz - (Case of 14)
In Stock: 140
$4.97 $29.99 -83%
Key Grow Solutions White Royal 4-10-5 | 32oz - (Case of 14)
In Stock: 158
$4.97 $27.99 -82%
Grotek Cal Max 2-0-0 | 1L - (Case of 6)
In Stock: 60
$4.94 $14.69 -66%
Grotek Vitamax Plus 1-1-2 | 500mL - (Case of 6)
In Stock: 30
$4.93 $14.59 -66%
Down to Earth Kelp Meal 1-0.1-2 | 0.5lb - OMRI Listed
In Stock: 468
$4.90 $6.99 -30%
Down to Earth Gypsum | 1lb - OMRI Listed - (Case of 6)
In Stock: 114
$4.89 $6.99 -30%
Grotek Insta-Green 3-0-0 | 1L - (Case of 6)
In Stock: 132
$4.78 $14.29 -67%
Grotek Insta-Green 3-0-0 | 500mL - (Case of 6)
In Stock: 12
$4.78 $10.59 -55%
Humboldt Nutrients Mayan Microzyme, 8 oz
In Stock: 4
$4.72 $34.99 -87%
Mad Farmer Be One, 1 qt
Out of stock
$4.70 $31.49 -85%
Grotek Monster Grow Pro 18-36-1 | 130g
In Stock: 84
$4.67 $13.79 -66%
Aptus Breakout Powder, (5-Pack)
In Stock: 15
$4.63 $72.19 -94%
Grow More Mendocino Avalanche, 1 qt
In Stock: 3
$4.63 $27.43 -83%
Grotek Gro-Silic, 4 L
In Stock: 985
$4.54 $232.99 -98%
Key Grow Solutions Blue Butterfly 6-4-5 | 32oz - (Case of 14)
In Stock: 112
$4.41 $22.99 -81%
Aphrodite's Extraction, 1 qt
Out of stock
$4.37 $25.99 -83%
Poseidonzime, 1 qt
Out of stock
$4.37 $25.99 -83%
DaKine 420 Nitro Nutrients Base | 200g - (Case of 20)
In Stock: 80
$4.35 $17.49 -75%
DaKine 420 Nitro Nutrients Grow | 200g - (Case of 20)
In Stock: 40
$4.35 $17.49 -75%
FoxFarm Open Sesame, 1 lb
In Stock: 1162
$4.24 $57.10 -93%
Rock Fusion Bloom Base Nutrient, 1 L
In Stock: 83
$4.24 $39.99 -89%
Roots Organics Buddha Bloom, 1 qt
Out of stock
$4.21 $24.93 -83%
Remo Magnifical, 1 L
In Stock: 12
$4.13 $22.99 -82%
Remo Grow, 20 L
In Stock: 27
$4.09 $197.99 -98%
Down to Earth All-Purpose Mix 4-6-2 | 1lb - OMRI Listed - (Case of 12)
In Stock: 1800
$3.98 $6.29 -37%
Down To Earth Rose & Flower Mix 4-8-4 | 1lb - (Case of 12)
In Stock: 216
$3.98 $6.29 -37%
Down to Earth Acid Mix 4-3-6 | 1lb - For Acid Soil Loving Plants - (Case of 12)
In Stock: 2820
$3.98 $6.29 -37%
Down to Earth Starter Mix 3-3-3 | 1lb - OMRI Listed - (Case of 12)
In Stock: 300
$3.98 $6.29 -37%
Down to Earth Vegetable Garden 4-4-4 | 1lb - OMRI Listed - (Case of 12)
In Stock: 1512
$3.98 $6.29 -37%
Down to Earth Citrus Mix 6-3-3 | 1lb - OMRI Listed - (Case of 12)
In Stock: 2064
$3.98 $6.29 -37%
FoxFarm Open Sesame, 6 oz
In Stock: 488
$3.98 $27.02 -85%
BioAG Ful-Humix | 100g - OMRI Listed - (Case of 24)
In Stock: 314
$3.83 $12.30 -69%
Hades Down, 1 qt
Out of stock
$3.83 $22.99 -83%
Zeus Juice, 1 qt
In Stock: 3
$3.83 $22.99 -83%
Down to Earth Blood Meal 12-0-0 | 0.5lb - OMRI Listed - (Case of 12)
In Stock: 492
$3.78 $5.99 -37%
Down to Earth Fish Bone Meal 4-12-0 | 1lb - OMRI Listed - (Case of 12)
In Stock: 684
$3.78 $5.99 -37%
Down to Earth Bat Guano 7-3-1 | 0.25lb - OMRI Listed - (Case of 12)
In Stock: 840
$3.78 $5.99 -37%
DaKine 420 Foliar Science | 250g - (Case of 4)
In Stock: 40
$3.73 $14.99 -75%
Remo Nature's Candy, 1 L
In Stock: 7
$3.71 $26.99 -86%
Down to Earth Alfalfa Meal 2.5-0.5-2.5 | 0.5lb - OMRI Listed
In Stock: 694
$3.69
Elite Resin D, 32 oz - A Hydrofarm Exclusive!
In Stock: 87
$3.67 $72.59 -95%
Growth Science Organics Root Magic, 1 qt
In Stock: 102
$3.63 $44.99 -92%
Remo Grow, 1 L
In Stock: 8
$3.63 $20.99 -83%
Primordial Solutions Rootamentary, 16 oz
In Stock: 49
$3.39 $45.99 -93%
Key Grow Solutions Purple Cat 3-0-0 | 32oz - (Case of 14)
In Stock: 154
$3.31 $17.99 -82%
Remo Micro, 1 L
In Stock: 38
$3.31 $22.99 -86%
Optic Foliar REV, 500 ml - (Case of 12)
In Stock: 19
$3.25 $71.99 -95%
Optic Foliar Watts, 500 ml - (Case of 12)
In Stock: 24
$3.25 $71.99 -95%
Down to Earth AZOMITE Slow Release Powder | 1lb - OMRI Listed - (Case of 12)
In Stock: 1952
$3.12 $4.39 -29%
Plant Success Organics Soluble 0.5-0.1-7 | 0.5oz
In Stock: 646
$3.08 $3.69 -17%
Plant Success Organics Granular 3-1-2 | 1oz - Granules - (Case of 10)
In Stock: 480
$3.01 $3.63 -17%
Medusa's Magic, 1 qt
In Stock: 66
$2.92 $17.49 -83%
Mega Morpheus, 1 qt
Out of stock
$2.92 $17.49 -83%
Pegasus Potion, 1 qt
Out of stock
$2.92 $17.49 -83%
Grotek Final Flush Blueberry, 1 L
In Stock: 442
$2.85 $15.19 -81%
Roots Organics Ancient Amber, 5 gal
In Stock: 73
$2.77 $188.99 -99%
Soul Sensei Micro, 1 qt
In Stock: 1095
$2.67 $19.79 -87%
Grotek Monster Grow Pro 18-36-1 | 20g
In Stock: 1
$2.66 $7.89 -66%
Grotek Monster Bloom 0-50-30 | 15ct - 0.7oz
In Stock: 9
$2.66 $7.89 -66%
Down to Earth Oyster Shell | 1lb - OMRI Listed - (Case of 12)
Out of stock
$2.54 $3.69 -31%
Down to Earth Granular Humic Acids | 1lb - OMRI Listed - (Case of 12)
Out of stock
$2.54 $3.69 -31%
Growth Science Nutrients Rock Solid, 1 qt
In Stock: 48
$2.54 $24.99 -90%
Grotek Gro-Silic, 250 ml
In Stock: 82
$2.54 $32.99 -92%
Growth Science Organics Grow, 2.5 gal
In Stock: 39
$2.48 $174.99 -99%
FoxFarm Cultivation Nation Micro, 1 pt
In Stock: 169
$2.36 $17.50 -87%
FoxFarm Happy Frog Japanese Maple Fertilizer, 4 lb bag
Out of stock
$2.35 $17.42 -87%
FoxFarm Bush Doctor Cal-Mag, 1 pt
In Stock: 1078
$2.35 $17.38 -86%
Mad Farmer Mother Of All Bloom, 100g
In Stock: 71
$2.35 $16.05 -85%
Growth Science Nutrients Base A, 1 qt
In Stock: 10
$2.28 $17.99 -87%
Aptus Massboost, 100 ml
In Stock: 147
$2.19 $26.50 -92%
Optic Foliar ATAK Concentrate, 250 ml
In Stock: 2
$2.08 $18.99 -89%
Soul Sensei Bloom, 1 qt
In Stock: 30
$2.08 $15.39 -86%
Grotek Blossom Blaster, 20 g
In Stock: 2862
$1.94 $12.99 -85%
Growth Science Organics Abundant-Sea, 1 qt
Out of stock
$1.89 $39.99 -95%
Optic Foliar ATAK Concentrate, 1 L
In Stock: 25
$1.89 $42.99 -96%
Optic Foliar ATAK Concentrate, 4 L
In Stock: 34
$1.86 $94.99 -98%
House & Garden Multi Zen, 500 ml
In Stock: 59
$1.84 $27.29 -93%
Optic Foliar Transport, 60 ml - (Case of 12)
Out of stock
$1.55 $12.99 -88%
HDI Clonex Clone Solution | 20ml - (Case of 18)
In Stock: 792
$1.54 $1.78 -13%
Grotek Synergy, 140 grams
In Stock: 20
$1.51 $54.99 -97%
Vegamatrix Amp-It, 1qt
In Stock: 82
$1.38 $35.99 -96%
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