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Nutrients & Supplements

Soil Amendments
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128
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HDI Ionic Grow for Soil Plant Nutrient 3-1-4 | 1gal
In stock
$37.85 $46.24 -18%
Nectar for The Gods One Shot 3-10-0 | 12lb
Out of stock
$37.85 $54.99 -31%
Down To Earth Fruit Tree 6-2-4 | 25lb - OMRI Listed
In stock
$37.77 $51.99 -27%
Down To Earth Rose & Flower Mix 4-8-4 | 25lb - OMRI Listed
In stock
$37.58 $50.69 -26%
Elite Resin D, 32 oz - A Hydrofarm Exclusive!
In stock
$37.56 $72.59 -48%
House & Garden Aqua Flakes A, 5 L
In stock
$37.56 $49.48 -24%
House & Garden Aqua Flakes B, 5 L
In stock
$37.56 $49.48 -24%
House & Garden Cocos A, 5 L
In stock
$37.56 $49.48 -24%
House & Garden Cocos B, 5 L
In stock
$37.56 $49.48 -24%
House & Garden Soil A, 5 L
In stock
$37.56 $49.48 -24%
House & Garden Soil B, 5 L
In stock
$37.56 $49.48 -24%
Remo Grow, 4 L
In stock
$37.56 $49.99 -25%
Botanicare Silica Blast 0-0-0.5 - 1gal
In stock
$37.49 $54.78 -32%
House & Garden Multi Zen, 1 L
In stock
$37.40 $49.27 -24%
Remo Bloom, 4 L
In stock
$37.20 $48.99 -24%
Down to Earth Liquid Bone Meal 0-12-0 | 1gal
Out of stock
$37.08 $48.99 -24%
Royal Gold Imperial Boost 0-15-11 | 10lb
In stock
$37.01 $47.99 -23%
Roots Organics Uprising Bloom, 9 lbs
In stock
$36.89 $48.59 -24%
Roots Organics Uprising Foundation, 9 lbs
In stock
$36.89 $48.59 -24%
Roots Organics Uprising Grow, 9 lbs
In stock
$36.89 $48.59 -24%
DaKine 420 Shock & Awe Bloom Booster | 1,000g
In stock
$36.75 $68.99 -47%
Technaflora B.C. Bloom, 4 L
In stock
$36.74 $47.99 -23%
Technaflora B.C. Grow, 4 L
In stock
$36.74 $47.99 -23%
Save 15%
Great White Premium Mycorrhizae, 4 oz
In stock
$36.54 $43.08 -15%
Royal Gold Crown Jewels Bloom 1-4-2 | 10lb
In stock
$36.50 $47.99 -24%
Royal Gold Crown Jewels Grow 3-2-2 | 10lb
In stock
$36.50 $47.99 -24%
HEAVY 16 Foliar, 32 oz
In stock
$36.21 $52.49 -31%
Grotek Cal Max 2-0-0 | 4L
In stock
$36.00 $47.59 -24%
Technaflora Awesome Blossoms, 1 L
In stock
$35.99 $47.99 -25%
Save 15%
Hygrozyme Horticultural Enzyme Formula, 1 L
In stock
$35.83 $41.99 -15%
Down to Earth Fish Bone Meal 4-12-0 | 25lb - OMRI Listed
In stock
$35.78 $48.99 -27%
Save 15%
Cutting Edge Solutions Micro, 1 gal
In stock
$35.77 $41.99 -15%
Cutting Edge Solutions Louder Powder Grow A (15-0-0), 5 lb Bag
In stock
$35.74 $49.99 -29%
Cutting Edge Solutions Louder Powder Grow B (8-13-31), 5 lb Bag
In stock
$35.74 $49.99 -29%
Cutting Edge Solutions Louder Powder Bloom A (14-0-0), 5 lb Bag
In stock
$35.74 $49.99 -29%
Cutting Edge Solutions Louder Powder Bloom B (0-25-24), 5 lb Bag
In stock
$35.74 $49.99 -29%
Save 15%
Orca Premium Liquid Mycorrhizae, 16 oz
In stock
$35.67 $42.07 -15%
Olympus Up, 1 gal
In stock
$35.25 $46.49 -24%
Key Grow Solutions Blue Butterfly 6-4-5 | 1gal
In stock
$35.20 $69.99 -50%
Rare Dankness Nutrients Perfecta FORTIFY, 1 gallon pail, 6 lbs
Out of stock
$35.12 $199.99 -82%
Soul Sensei Micro, 1 gal
In stock
$35.05 $46.19 -24%
Botanicare Hydroplex Bloom 0-10-6 - 32oz
In stock
$34.84 $50.89 -32%
Rock Rootinator, 5 L
In stock
$34.50 $269.99 -87%
HEAVY 16 Bud A, 1 gal
In stock
$34.50 $50.01 -31%
HEAVY 16 Bud B, 1 gal
In stock
$34.50 $50.01 -31%
HEAVY 16 Veg A, 1 gal
In stock
$34.50 $50.01 -31%
HEAVY 16 Veg B, 1 gal
In stock
$34.50 $50.01 -31%
Save 4%
General Hydroponics Flora Series Trial Pack | 3pc - 32oz FloraMicro, 32oz FloraGro, and 32oz FloraBloom
In stock
$34.46 $35.77 -4%
Roots Organics Extreme Serene, 1 qt
In stock
$34.43 $45.35 -24%
Plant Success Great White Premium Mycorrhizae | 4oz
In stock
$34.42 $43.08 -20%
CYCO 5L Kleanse (2/CS)
In stock
$34.16 $50.04 -32%
BioAG Cytoplus | 300g
Out of stock
$34.16 $44.98 -24%
SUPERthrive Root-Gel Rooting Gel | 8oz
Out of stock
$34.16 $51.99 -34%
Biobizz Alg-A-Mic, 1 L
In stock
$34.14 $44.99 -24%
Save 13%
HYGROZYME Horticultural Horticulture Enzyme Formula | 1L (0.26gal)
In stock
$34.11 $39.00 -13%
Grotek Insta-Green 3-0-0 | 4L
In stock
$34.10 $44.99 -24%
Optic Foliar REV, 500 ml
In stock
$33.95 $71.99 -53%
Optic Foliar WATTS, 500 ml
In stock
$33.95 $71.99 -53%
Down To Earth Vegetable Garden 4-4-4 | 25lb - OMRI Listed
In stock
$33.78 $44.69 -24%
Down to Earth All-Purpose Mix 4-6-2 | 25lb - OMRI Listed
In stock
$33.78 $44.69 -24%
Nectar for The Gods Olympus Up | 1gal
In stock
$33.70 $42.99 -22%
MICROBE Life Hydroponics All-In-One | 32oz
In stock
$33.69
Plant Success Orca | 16oz
In stock
$33.60 $42.07 -20%
Save 18%
HDI Clonex Mist Root Promoter | 750ml
In stock
$33.49 $40.90 -18%
House & Garden Bio 1-Component, 1 L
In stock
$33.48 $44.10 -24%
Roots Organics Trinity, 2.5 gal
Out of stock
$33.48 $184.79 -82%
Emerald Harvest Emerald Goddess, 1 qt
In stock
$33.40 $44.00 -24%
Emerald Harvest Honey Chome, 1 qt
In stock
$33.40 $44.00 -24%
Emerald Harvest King Kola, 1 qt
In stock
$33.40 $44.00 -24%
Emerald Harvest King Kola, 1 qt (FL/NM/PA)
In stock
$33.40 $44.00 -24%
Down to Earth Acid Mix 4-3-6 | 25lb - For Acid Soil Loving Plants
In stock
$33.29 $43.99 -24%
Save 9%
MegaPhos SP Phosphorus Solubilizing Microbe | 2oz - OMRI Listed
Out of stock
$33.16 $36.57 -9%
FoxFarm Bush Doctor Microbe Brew, 1 qt
In stock
$33.09 $42.55 -22%
Save 2%
Magnesium Sulfate Epsom Salts | 50lb (49/PL) - OMRI Listed
In stock
$33.05 $33.57 -2%
Save 16%
Grotek Insta-Green, 4 L
In stock
$32.89 $38.99 -16%
Roots Organics Nitro Bat Guano, 9 lbs
In stock
$32.79 $43.19 -24%
Save 12%
PRO-MIX BRK BIOFUNGICIDE + MYCORRHIZAE Peat/Bark Mix | 2.8cu ft - Loose Fill (48/PL)
In stock
$32.74 $37.04 -12%
Grotek Root Force 1-0-0 | 1L
In stock
$32.25 $42.59 -24%
Save 12%
Roots Organics Terp Tea Microbe Charge, 3 lb
In stock
$32.21 $36.71 -12%
Botanicare Pure Blend Tea 0.5-0.5-1 - 1gal
In stock
$32.15 $47.07 -32%
Save 11%
Dr. Earth Premium Gold Organic All-Purpose Fertilizer 4-4-4 | 12lb - Poly Bag
Out of stock
$32.14 $35.99 -11%
Save 15%
Cutting Edge Solutions Bloom, 1 gal
In stock
$32.11 $37.99 -15%
Coast of Maine Stonington Blend Organic Natural Grower's Mix | 1.5cu ft - OMRI Listed
In stock
$32.00 $46.29 -31%
Herculean Harvest, 1 gal
In stock
$31.97 $42.49 -25%
General Hydroponics FloraPro Late Bloom 0-24-26 - 5lb
In stock
$31.92 $45.48 -30%
Save 12%
PRO-MIX BRK20 BIOFUNGICIDE + MYCORRHIZAE Peat/Bark Mix | 2.8cu ft - Loose Fill (48/PL)
In stock
$31.89 $36.07 -12%
Emerald Harvest Micro, 1 gal
In stock
$31.89 $42.00 -24%
Aptus Believer Pack
In stock
$31.74 $92.06 -66%
Big Foot Mycorrhizae Granular | 2lb - Granules
In stock
$31.59 $46.39 -32%
Grotek Precision Micro, 23 L
In stock
$31.34 $118.99 -74%
FoxFarm Bush Doctor Microbe Brew Microbial Inoculant 1-0.3-0.2 | 32oz - Concentrate
In stock
$31.31 $40.99 -24%
CYCO Commercial Series Bloom 8-6-11 - 750g
In stock
$31.16 $66.11 -53%
Emerald Harvest Cali Pro Bloom A, 1 gal
In stock
$31.13 $41.00 -24%
Emerald Harvest Cali Pro Bloom B, 1 gal
In stock
$31.13 $41.00 -24%
Emerald Harvest Cali Pro Grow A, 1 gal
In stock
$31.13 $41.00 -24%
Emerald Harvest Cali Pro Grow B, 1 gal
In stock
$31.13 $41.00 -24%
Save 16%
Cutting Edge Solutions Grow, 1 gal
In stock
$30.95 $36.99 -16%
Optic Foliar REV, 250 ml
Out of stock
$30.93 $40.99 -25%
Optic Foliar TRANSPORT, 250 ml
In stock
$30.93 $39.99 -23%
House & Garden Drip Clean, 500 ml
Out of stock
$30.90 $40.70 -24%
Mad Farmer Mother Of All Bloom 500g
In stock
$30.90 $53.54 -42%
Grow More Bio-Cozyme, 1 gal
In stock
$30.87 $39.99 -23%
Save 14%
South Cascade Organics SLF-100, 1 qt
In stock
$30.87 $35.99 -14%
FoxFarm Open Sesame, 2 lbs
In stock
$30.84 $99.39 -69%
Save 16%
Grotek Bud Fuel Pro, 1 L
In stock
$30.59 $36.26 -16%
Soul Sensei Bloom, 1 gal
In stock
$30.48 $40.16 -24%
Soul Sensei Grow, 1 gal
In stock
$30.48 $40.16 -24%
Botanicare Clearex Rinsing Solution - 1gal
In stock
$30.42 $44.36 -31%
Emerald Harvest Emerald Goddess 2-1-4 | 32oz
In stock
$30.36 $44.00 -31%
Emerald Harvest King Kola 0.3-2-3 | 32oz
In stock
$30.36 $44.00 -31%
Emerald Harvest King Kola 0.3-2-3 | 32oz
In stock
$30.36 $44.00 -31%
Emerald Harvest Honey Chome 0.5-0.5-1 | 32oz
In stock
$30.36 $44.00 -31%
Nectar for The Gods Herculean Harvest Liquid Bone Meal 0-6-0 | 1gal
In stock
$30.33 $38.99 -22%
Nectar for The Gods Triton's Trawl Fishbone Meal 0.5-4-0 | 1gal
Out of stock
$30.33 $38.99 -22%
Save 12%
Roots Organics Terp Tea Bloom Booster, 3 lb
In stock
$30.32 $34.56 -12%
Save 13%
Roots Organics Extreme Serene | 32oz
In stock
$30.31 $34.99 -13%
House & Garden Roots Excelurator Gold, 100 ml
In stock
$30.08 $39.63 -24%
Nectar for The Gods Pegasus Potion Feather Tea 1-2-0 | 1gal
In stock
$30.02 $48.99 -39%
FoxFarm Bush Doctor Wholly Mackerel Fertilizer 3-1-0 | 32oz - Concentrate
In stock
$29.96 $38.99 -23%
General Hydroponics Floralicious Plus 2-0.8-0.5 - 16oz
In stock
$29.92 $43.84 -32%
Save 17%
Down to Earth Oyster Shell | 50lb - OMRI Listed
Out of stock
$29.86 $35.99 -17%
Xtreme Gardening Versity Bacillus Blend | 2oz - Poly Bag
In stock
$29.79
General Hydroponics FloraMicro 5-0-1 - 1gal
In stock
$29.64 $46.07 -36%
Down to Earth Granular Root Zone | 8oz - OMRI Listed
In stock
$29.64 $44.39 -33%
Save 13%
Roots Organics Terp Tea Microbe Charge | 3lb
Out of stock
$29.47 $33.99 -13%
Save 16%
Cutting Edge Solutions Uncle John's Blend, 1 qt
In stock
$29.38 $34.99 -16%
DaKine 420 Nitro Nutrients Bloom | 1,000g
In stock
$29.30 $54.99 -47%
DaKine 420 CalMag | 1,000g
In stock
$29.30 $54.99 -47%
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