0Cart

Nutrients & Supplements

Soil Amendments
Sort by:
Price: High to Low
Show:
128
DaKine 420 Foliar Science | 1,000g
In stock
$29.30 $54.99 -47%
DaKine 420 Nitro Nutrients Grow | 1,000g
In stock
$29.30 $54.99 -47%
Save 16%
Cutting Edge Solutions Mag-Amped, 1 qt
In stock
$29.27 $34.99 -16%
House & Garden Magnesium Boost, 1 L
In stock
$29.27 $38.56 -24%
Emerald Harvest Sturdy Stalk, 1 qt
In stock
$29.21 $38.50 -24%
Xtreme Azos Beneficial Bacteria, 6 oz (170 g)
In stock
$29.19 $38.99 -25%
Grotek Monster Grow Pro 18-36-1 | 500g
In stock
$29.06 $52.99 -45%
Down To Earth Island Phosphate 0-11-0 | 5lb
In stock
$28.99
Emerald Harvest Micro | 1gal
In stock
$28.98 $42.00 -31%
Save 12%
Grotek Gro-Silic, 250 ml
In stock
$28.97 $32.99 -12%
FoxFarm Grow Big Hydro® Liquid Concentate, 1 qt
In stock
$28.81 $36.10 -20%
FoxFarm Bush Doctor Kangaroots, 1 qt
In stock
$28.81 $36.12 -20%
Xtreme Mykos Pure Mycorrhizal Inoculum, Granular, 2.2 lbs
In stock
$28.62 $37.99 -25%
Save 13%
Roots Organics Terp Tea Bloom Booster | 3lb
In stock
$28.54 $32.99 -13%
Technaflora Thrive Alive B1 Red, 500ml
In stock
$28.54 $39.96 -29%
House & Garden Amino Treatment, 100 ml
In stock
$28.46 $37.49 -24%
Emerald Harvest Cali Pro Grow A 3-0-0 | 1gal
In stock
$28.29 $41.00 -31%
Emerald Harvest Cali Pro Grow B 2-2-5 | 1gal
In stock
$28.29 $41.00 -31%
Emerald Harvest Cali Pro Bloom A 3-0-3 | 1gal
In stock
$28.29 $41.00 -31%
Emerald Harvest Cali Pro Bloom B 1-4-6 | 1gal
In stock
$28.29 $41.00 -31%
General Hydroponics FloraPro Calcium + Micros 14-0-0 + 17% Ca - 5lb
In stock
$28.15 $40.25 -30%
Remo AstroFlower, 1 L
In stock
$28.10 $36.99 -24%
FoxFarm Grow Big Hydroponic Fertilizer 3-2-6 | 32oz - Concentrate
In stock
$28.00 $35.99 -22%
Botanicare 32oz Hydroguard (12/CS)
In stock
$27.94 $41.00 -32%
FoxFarm Bush Doctor Kangaroots Root Drench Inoculant 0.8-0.1-0.03 | 32oz - Concentrate
In stock
$27.92 $35.99 -22%
General Hydroponics Ripen 0.5-7-6 | 32oz
In stock
$27.92 $40.46 -31%
Save 16%
Microbe Life Photosynthesis Plus, 1 qt
In stock
$27.78 $32.99 -16%
Save 16%
Microbe Life Plus-C, 1 qt (CA ONLY)
In stock
$27.78 $32.99 -16%
Save 16%
Microbe Life Photosynthesis Plus-O, 1 qt (OR only)
In stock
$27.78 $32.99 -16%
Save 19%
FoxFarm Bush Doctor Sledge Hammer, 1 qt
In stock
$27.77 $34.28 -19%
FoxFarm Bush Doctor Boomerang, 1 qt
In stock
$27.75 $34.83 -20%
FoxFarm Bush Doctor Bembe, 1 qt
In stock
$27.74 $36.12 -23%
House & Garden Top Booster, 1 L
In stock
$27.63 $36.41 -24%
Suståne 8-2-4 Lawn & Landscape Plant Food | 20lb - OMRI Listed
Out of stock
$27.54 $37.71 -27%
Save 16%
Xtreme Gardening Calcar Foliar Booster | 6oz
Out of stock
$27.49 $32.81 -16%
General Hydroponics FloraBloom 0-5-4 - 1gal
In stock
$27.41 $40.53 -32%
General Hydroponics FloraGro 2-1-6 - 1gal
In stock
$27.41 $40.53 -32%
South Cascade Organics SLF-100 | 32oz - OMRI Listed
In stock
$27.26 $35.99 -24%
Save 9%
Armory Beneficial Bacteria Blend | 2oz - OMRI Listed
In stock
$27.24 $30.03 -9%
Roots Organics Oregonism XL, 8 oz
In stock
$27.05 $35.63 -24%
Olivia's Cloning Solution | 1gal
In stock
$26.97 $37.95 -29%
Vegamatrix Amp-It, 1 gal
In stock
$26.97 $99.99 -73%
FoxFarm Bush Doctor Kelp Me Kelp You 0.5-0-0.5 | 32oz - Concentrate - OMRI Listed
In stock
$26.95 $34.99 -23%
Growth Science Organics Grow, 1 gal
In stock
$26.95 $74.99 -64%
Save 17%
Gaia Green Glacial Rock Dust, 22.68 kg
In stock
$26.84 $32.41 -17%
Botanicare Sweet Berry Plant Food | 32oz
In stock
$26.77 $39.03 -31%
FoxFarm Bush Doctor Bembé Sweet & Dandy 0-1-3 | 32oz - Concentrate
In stock
$26.65 $34.99 -24%
Emerald Harvest Sturdy Stalk | 32oz
In stock
$26.56 $38.50 -31%
Emerald Harvest Bloom, 1 gal
In stock
$26.56 $35.00 -24%
Emerald Harvest Grow, 1 gal
In stock
$26.56 $35.00 -24%
Humboldt Nutrients Mayan Microzyme, 8 oz
In stock
$26.55 $34.99 -24%
General Hydroponics KoolBloom 2-45-28 - 2.2lb
In stock
$26.54 $38.87 -32%
FoxFarm Tiger Bloom® Liquid Concentrate, 1 qt
In stock
$26.54 $33.29 -20%
FoxFarm Grow Big® Liquid Concentrate, 1 qt
In stock
$26.52 $33.26 -20%
House & Garden Hydro B, 20 L
Out of stock
$26.51 $123.99 -79%
Down to Earth All-Purpose Mix 4-6-2 | 3pk - 5lb - OMRI Listed
In stock
$26.32 $37.69 -30%
Down To Earth Rose & Flower Mix 4-8-4 | 15lb - 3pk of 5lb
In stock
$26.32 $37.69 -30%
Down To Earth Acid Mix 4-3-6 | 15lb - 3pk of 5lb
In stock
$26.32 $37.69 -30%
Down To Earth Fruit Tree 6-2-4 | 15lb - 3pk of 5lb
In stock
$26.32 $37.69 -30%
Down To Earth Vegetable Garden 4-4-4 | 15lb - 3pk of 5lb
In stock
$26.32 $37.69 -30%
Botanicare Liquid Karma 0.1-0.1-0.5 - 32oz
In stock
$26.25 $38.26 -31%
Bloom Khaos, 1 qt
In stock
$26.23 $34.99 -25%
FoxFarm Bush Doctor Sledgehammer | 32oz - OMRI Listed
In stock
$26.19 $33.99 -23%
Save 9%
Gaia Green Power Bloom, 2 kg Pouch
In stock
$26.15 $28.59 -9%
Save 16%
Grotek Vitamax Pro, 1 L
In stock
$26.15 $31.02 -16%
DaKine 420 Bio Minerals | 1,000g
Out of stock
$26.11 $48.99 -47%
Grow More Mendocino Honey, 1 gal
In stock
$26.07 $33.99 -23%
Grotek Cal-Max, 1 gal
In stock
$26.07 $45.33 -42%
FoxFarm Bush Doctor Boomerang Comeback Formula 2-0.2-0.3 | 32oz
In stock
$25.97 $33.99 -24%
SUPERthrive K-L-N Rooting Concentrate | 32oz
In stock
$25.93 $39.77 -35%
Save 16%
Xtreme Gardening Azos Root Booster | 6oz
In stock
$25.92 $30.92 -16%
Save 16%
Xtreme Gardening Mykos | 2.2lb
In stock
$25.92 $30.92 -16%
Roots Organics Trinity, 1 qt
In stock
$25.86 $34.00 -24%
Save 2%
PRO-MIX LP15 | 2.8cu ft - Loose Fill (57/PL)
Out of stock
$25.83 $26.23 -2%
Great White Granular 1 Mycorrhizal | 2.2lb - OMRI Listed
In stock
$25.82 $32.32 -20%
Grotek Rype, 1 L
In stock
$25.76 $41.48 -38%
Nectar for The Gods Bloom Khaos Foliar Spray 0-0-0.5 | 32oz
In stock
$25.67 $32.99 -22%
Rhizoflora Purpinator 0-2-4 - 32oz
In stock
$25.63
FoxFarm Bush Doctor Kelp Me Kelp You, 1 qt
In stock
$25.63 $36.10 -29%
Save 18%
FoxFarm Tiger Bloom Buds & Blooms Fertilizer 2-8-4 | 32oz - Concentrate
In stock
$25.47 $30.99 -18%
Save 18%
FoxFarm Grow Big Fertilizer 6-4-4 | 32oz - Concentrate
In stock
$25.45 $30.99 -18%
Roots Organics Seabird Guano Powder, 9 lbs
Out of stock
$25.41 $33.47 -24%
Humboldt Roots, 125 ml
In stock
$25.35 $48.99 -48%
General Hydroponics FloraPro Grow 10-12-22 - 5lb
In stock
$25.34 $40.25 -37%
General Hydroponics FloraPro Bloom 7-12-27 - 5lb
In stock
$25.34 $40.25 -37%
CYCO 5L Bloom B (2/CS)
In stock
$25.14 $36.81 -32%
CYCO 5L Bloom A (2/CS)
In stock
$25.14 $36.81 -32%
CYCO 5L Grow B (2/CS)
In stock
$25.14 $36.81 -32%
CYCO 5L Grow A (2/CS)
In stock
$25.14 $36.81 -32%
SugarDaddy, 1 L
In stock
$25.10 $33.99 -26%
Save 17%
Crystal Burst, 1 qt
In stock
$25.02 $29.99 -17%
FOOP CANNA Sweetener Organic Terpene Enhancer | 32oz - OMRI Listed
Out of stock
$24.99
House & Garden Hydro A, 20 L
In stock
$24.99 $123.99 -80%
Great White Granular 1, 2.2lbs
In stock
$24.92 $32.32 -23%
General Hydroponics FloraNova Grow 7-4-10 - 32oz
In stock
$24.84 $36.39 -32%
General Hydroponics FloraNova Bloom 4-8-7 - 32oz
In stock
$24.84 $36.39 -32%
CYCO Commercial Series Grow 10-5-13 - 750g
In stock
$24.54 $66.11 -63%
Optic Foliar SWITCH, 1 L
In stock
$24.44 $32.99 -26%
Save 19%
Neptune's Harvest Kelp Meal Multi-Purpose Plant Food 1-0-2 | 4lb - OMRI Listed
In stock
$24.34 $29.99 -19%
Rock Fusion Grow Base Nutrient, 1 L
In stock
$24.33 $39.99 -39%
MICROBE Life Hydroponics All-In-One | 16oz
In stock
$24.19
Emerald Harvest Grow | 1gal
In stock
$24.15 $35.00 -31%
Emerald Harvest Bloom | 1gal
In stock
$24.15 $35.00 -31%
Xtreme Mykos Pure Mycorrhizal Inoculum, Wettable Powder, 12 oz
In stock
$24.08 $32.99 -27%
Down To Earth Tree & Shrub 4-2-4 | 25lb (40/PL)
In stock
$24.05 $63.99 -62%
Save 9%
Gaia Green Greensand, 1.25 kg U.S. (NA02)
In stock
$24.05 $26.49 -9%
Save 9%
Gaia Green Greensand, 1.25 kg Pouch
In stock
$24.05 $26.49 -9%
Down to Earth Liquid Bloom 2-6-5 | 32oz
In stock
$23.99
Save 11%
Plant Success King Crab, 4 oz
In stock
$23.95 $26.99 -11%
Save 12%
Coop Poop All-Purpose Garden Food by Healthy Grow | 40lb - OMRI Listed
In stock
$23.87 $26.99 -12%
Grotek Vital 5% Calcium | 1L
In stock
$23.83 $37.97 -37%
Grotek Root Force 1-0-0 | 500mL
In stock
$23.74 $31.39 -24%
MICROBE Life Hydroponics Vegetable & Fruit Yield Enhancer | 32oz
In stock
$23.50 $41.99 -44%
Grotek Rype 3-0-0 | 1L
In stock
$23.32 $37.15 -37%
Save 8%
Coast of Maine Squid All Natural Liquid Plant Food 2-3-0, 1 qt
In stock
$23.00 $24.99 -8%
Grotek Biofuse | 300g
In stock
$22.94 $30.29 -24%
Save 12%
Roots Organics Trinity | 32oz
In stock
$22.81 $25.99 -12%
MICROBE Life Hydroponics Photosynthesis Plus | 32oz
In stock
$22.77 $40.99 -44%
Big Foot Mycorrhizae Gold + Beneficial bacteria | 4oz - Direct-to-Root Inoculum
In stock
$22.63 $35.69 -37%
BioAG Ful-Humix | 300g
Out of stock
$22.45 $29.96 -25%
BioAG TM-7 | 300g
In stock
$22.44 $30.02 -25%
BioAG Ful-Power Purified Fulvic Acid | 32oz - OMRI Listed
In stock
$22.42 $29.99 -25%
Grotek Final Flush | 4L - Regular
In stock
$22.38 $46.29 -52%
Aptus Massboost, 250 ml
In stock
$22.33 $52.72 -58%
Mother Earth Floressence Bloom Supplement 1-1-1 - 32oz
In stock
$22.22 $32.53 -32%
Humboldt Nutrients Verde, 1 qt
In stock
$22.18 $28.99 -23%
Save 15%
Grotek Precision Micro, 4 L
In stock
$22.05 $25.99 -15%
Save 13%
Gaia Green All Purpose, 2 kg Pouch
In stock
$21.96 $25.29 -13%
Show another 128 products
Product filters
Free Shipping
In Stock
Nutrient Material
Price
$
–
$
  • $0
  • $43092
Shop Owner
Brand
    Show all (93)