0Cart

Nutrients & Supplements

Soil Amendments
Sort by:
Price: High to Low
Show:
128
Save 16%
Grotek Synergy, 140 grams
In stock
$46.45 $54.99 -16%
Big Foot Mycorrhizae Granular | 2lb
In stock
$46.35
Dyna-Gro Pro-TeKt, 1 gal
In stock
$46.27 $61.19 -24%
Down to Earth Fish Bone Meal 4-12-0 | 50lb - OMRI Listed
In stock
$46.22 $79.49 -42%
Aptus Breakout Powder, (5-Pack)
In stock
$46.20 $72.19 -36%
General Hydroponics ARMOR SI 0-0-4 | 1gal
In stock
$46.12 $72.83 -37%
General Organics BioThrive Bloom 2-4-4 | 1gal
In stock
$46.09 $72.67 -37%
Save 16%
Budswel, 1 gal
In stock
$46.04 $54.99 -16%
Xtreme Azos Beneficial Bacteria, 12 oz (340 g)
In stock
$45.94 $65.99 -30%
Down to Earth Fish Powder 12-1-1 | 5lb - (Case of 5)
In stock
$45.86 $67.39 -32%
Technaflora MagiCal, 4 L
In stock
$45.75 $74.99 -39%
Roots Organics HPK 0-4-3, 1 gal
In stock
$45.67 $71.42 -36%
Roots Organics Elemental, 9 lbs
In stock
$45.62 $71.27 -36%
Save 17%
Roots Organics Oregonism XL Root Growth Enhancer | 1lb - (Case of 12)
In stock
$45.41 $54.99 -17%
HEAVY 16 Prime, 32 oz
In stock
$45.35 $70.87 -36%
House & Garden Bud-XL, 1 L
In stock
$45.24 $64.26 -30%
Down to Earth Cottonseed Meal 6-2-1 | 50lb - All Purpose
In stock
$45.21 $84.99 -47%
Emerald Harvest Root Wizard | 32oz (OR)
In stock
$45.21 $96.00 -53%
House & Garden Commercial Bloom, 5 lbs Pouch
In stock
$45.12 $60.00 -25%
House & Garden Commercial Grow, 5 lbs Pouch
In stock
$45.12 $60.00 -25%
Emerald Harvest Cal-Mag | 1gal
In stock
$44.80 $70.00 -36%
Emerald Harvest Cal-Mag, 1 gal
In stock
$44.80 $70.00 -36%
Grow More Mendocino Avalanche, 1 gal
In stock
$44.80 $69.99 -36%
Mr. B's Green Trees Azospirillum Super Concentrate, 1 lb
In stock
$44.54 $69.60 -36%
House & Garden Algen Extract, 500 ml
In stock
$44.49 $63.19 -30%
Save 16%
Roots Organics HP2 | 1gal - (Case of 4)
In stock
$44.31 $52.99 -16%
Down to Earth Liquid Calcium 5% | 1gal - OMRI Listed - Makes 128 Gallons - (Case of 4)
In stock
$44.29 $62.99 -30%
Down to Earth Liquid All-Purpose 4-1-3 | 1gal - (Case of 4)
In stock
$44.29 $63.99 -31%
CYCO Platinum Series Silica 0-0-3 - 5L
In stock
$44.25 $69.89 -37%
Aphrodite's Extraction, 1 gal
In stock
$44.24 $69.49 -36%
Demeter's Destiny, 1 gal
In stock
$44.24 $69.49 -36%
Down to Earth Agmino Powder 14-0-0 | 5lb - (Case of 5)
In stock
$44.20 $95.29 -54%
Snow Storm Ultra, 1 qt
In stock
$44.12 $54.99 -20%
Save 2%
Sustane 4-6-4 All-Purpose Fertilizer | 50lb - OMRI Listed
In stock
$44.06 $44.75 -2%
Grotek Rype 3-0-0 | 4L - (Case of 4)
In stock
$44.03 $119.79 -63%
Microbe Life Hydroponics Terps Plus, 32 oz
In stock
$44.01 $62.99 -30%
Mad Farmer Mother Of All Bloom, 1 kg
In stock
$43.87 $91.02 -52%
BioBizz Root-Juice 1L
In stock
$43.74 $68.34 -36%
BioBizz Root-Juice 1L CA & OR only
In stock
$43.74 $68.34 -36%
HEAVY 16 Fire, 16 oz
In stock
$43.67 $68.24 -36%
HEAVY 16 Fire, 16 oz (OR Only)
In stock
$43.67 $68.24 -36%
HEAVY 16 Roots, 16 oz
In stock
$43.67 $68.24 -36%
General Hydroponics Diamond Nectar 0-1-1 - 1gal
In stock
$43.61 $68.90 -37%
Roots Organics HP2 0-4-0, 1 gal
In stock
$43.52 $68.03 -36%
Gaia Green Power Bloom, 10 kg
In stock
$43.49 $57.19 -24%
Cutting Edge Solutions Cal-Mag Amplified, 1 gal
In stock
$43.48 $61.99 -30%
Down to Earth Crab Meal 4-3-0 | 40lb - OMRI Listed
In stock
$43.34 $81.99 -47%
Grotek Cal Max 2-0-0 | 10L - (Case of 2)
In stock
$43.30 $134.99 -68%
Soul Amino-Aide, 1 qt
In stock
$43.10 $67.32 -36%
Gaia Green Worm Castings, 30L
In stock
$42.97 $55.99 -23%
Grotek Gro-Silic, 4 L
In stock
$42.96 $232.99 -82%
Grotek Pro-Silicate 0-0-4 | 10L - (Case of 2)
In stock
$42.93 $133.99 -68%
Roots Organics Oregonism XL, 1 lb
In stock
$42.85 $66.95 -36%
FoxFarm Cha Ching, 1 lb
In stock
$42.61 $59.35 -28%
Grotek Bloom Pack
In stock
$42.32 $132.39 -68%
CYCO 5L Uptake (2/CS) - (Case of 2)
In stock
$42.25 $66.11 -36%
Save 15%
Humboldt County's Own Sonic Bloom, 1 lb
In stock
$42.25 $49.99 -15%
Remo Grow, 10 L
In stock
$42.24 $99.00 -57%
Mother Earth LiquiCraft Grow 4-3-3 - 1gal
In stock
$41.96 $66.22 -37%
Budswel, 1 gal (CA Only)
In stock
$41.84 $54.99 -24%
Cultivation Nation Cal-Mag Gallon
Out of stock
$41.79 $68.09 -39%
Aurora Peat Products Procision Advantage, 3.8 cu ft bale
In stock
$41.75 $106.15 -61%
Xtreme Gardening Azos Root Booster | 12oz - (Case of 6)
In stock
$41.74 $53.77 -22%
Neptune's Harvest Fish & Seaweed Fertilizer 2-3-1 | 142oz - Concentrate - OMRI Listed - (Case of 4)
In stock
$41.57 $55.99 -26%
Down to Earth Granular Root Growth Enhancer | 5lb - OMRI Listed - (Case of 5)
In stock
$41.55 $136.99 -70%
Down to Earth Granular Humic Acids | 50lb - OMRI Listed
In stock
$41.50 $64.99 -36%
Save 15%
Age Old Kelp, 1 gal
In stock
$41.40 $48.99 -15%
Down to Earth Soluble Root Growth Enhancer | 1lb - OMRI Listed - (Case of 6)
Out of stock
$41.38 $59.99 -31%
Down to Earth Feather Meal 12-0-0 | 20lb - OMRI Listed
In stock
$41.29 $69.99 -41%
Xtreme Tea Brews Individual Pouches, 80 g & Microbe Food Packs, 7 g (10 each)
In stock
$41.23 $63.99 -36%
House & Garden Nitrogen Boost, 1 L
In stock
$41.13 $64.26 -36%
SUPERthrive Pro-TeKt Nutritional Supplement 0-0-3 | 1gal - The Silicon Solution - (Case of 4)
In stock
$41.04 $67.63 -39%
House & Garden Commercial CalMag, 5 lbs Pouch
In stock
$40.96 $55.00 -26%
Maxicrop Soluble Seaweed Powder 0-0-17 | 27oz - OMRI Listed - (Case of 6)
In stock
$40.63 $56.99 -29%
Save 17%
Roots Organics Ancient Amber | 1gal - (Case of 4)
Out of stock
$40.54 $48.99 -17%
Save 12%
SUPERthrive Vitamin Solution 0.5-0-0 | 16oz
In stock
$40.32 $45.99 -12%
House & Garden Drip Clean, 1 L
In stock
$40.32 $63.00 -36%
Nectar for The Gods Poseidonzime Foliar Spray 0-0-0.5 | 1gal
In stock
$40.23 $69.99 -43%
BioAG Ful-Humix | 2.2lb - OMRI Listed - (Case of 4)
Out of stock
$40.04 $57.42 -30%
Down to Earth Alfalfa Meal 2.5-0.5-2.5 | 25lb - OMRI Listed
In stock
$39.99
Botanicare Cal-Mag Plus 2-0-0 | 1gal
In stock
$39.92 $62.90 -37%
Grotek Gro-Silic, 500 ml
In stock
$39.92 $51.99 -23%
Roots Organics Ancient Amber, 1 gal
In stock
$39.92 $62.36 -36%
General Hydroponics CALiMAGic 1-0-0 - 1gal
In stock
$39.81 $62.93 -37%
Biobizz Top-Max, 1 L
In stock
$39.81 $62.20 -36%
BioBizz Top-Max 1L CA & OR only
In stock
$39.81 $62.20 -36%
DaKine 420 Sticky Icky Enzymes | 1,000g - (Case of 4)
In stock
$39.76 $168.99 -76%
Gaia Green All Purpose, 10 kg
In stock
$39.65 $56.10 -29%
Down to Earth Bio-Fish 7-7-2 | 25lb - OMRI Listed
In stock
$39.64 $58.99 -33%
Nectar for The Gods Gaia Mania Supplement 1-5-1 | 1gal - (Case of 4)
In stock
$39.08 $53.99 -28%
Nectar for The Gods Persephone's Palate | 1gal - (Case of 4)
In stock
$39.08 $53.99 -28%
Technaflora Thrive Alive B1 Red, 1 L
In stock
$39.04 $59.99 -35%
Grotek Heavy Bud Pro 1-0-3 | 4L - (Case of 4)
In stock
$38.73 $120.99 -68%
Save 15%
Royal Gold Crown Jewels Bloom 1-4-2, 10 lb
In stock
$38.71 $45.79 -15%
Save 15%
Royal Gold Crown Jewels Grow 3-2-2, 10 lb
Out of stock
$38.71 $45.79 -15%
SUPERthrive, 1 pt
In stock
$38.60 $50.49 -24%
MILLS START 1 LTR
In stock
$38.40 $60.00 -36%
Mad Farmer Cal+Mag, 1 gal
In stock
$37.84 $53.71 -30%
FoxFarm Beastie Bloomz, 1 lb
In stock
$37.82 $59.35 -36%
Grotek Blossom Blaster, 130 g
In stock
$37.70 $70.66 -47%
Mad Farmer Nutrient UpTake Solution (N.U.T.S.), 1 gal
In stock
$37.70 $53.55 -30%
Age Old Grow, 1 gal
In stock
$37.63 $48.99 -23%
Age Old Bloom, 1 gal
In stock
$37.63 $48.99 -23%
Down to Earth Bat Guano 7-3-1 | 10lb - OMRI Listed
In stock
$37.59 $49.99 -25%
Gaia Mania, 1 gal
In stock
$37.32 $58.49 -36%
FoxFarm Cha-Ching Soluble Fertilizer 9-50-10 | 1lb Jar
In stock
$37.27 $55.99 -33%
HDI MotherPlant Nutrients Part A | 1gal - (Case of 4)
In stock
$37.26 $49.07 -24%
BioAg Ful-Power | 1 gal (ID,IL,IA,KS,MN,NE,OH,OK,OR)
In stock
$37.21 $52.99 -30%
Save 17%
Roots Organics Terp Tea Grow | 9lb - (Case of 3)
In stock
$37.18 $44.99 -17%
Save 19%
Technaflora Recipe For Success Starter Kit
In stock
$37.07 $45.99 -19%
Remo Micro, 4 L
In stock
$36.97 $52.99 -30%
Remo Magnifical, 4 L
In stock
$36.97 $52.99 -30%
Remo VeloKelp, 1 L
In stock
$36.97 $49.99 -26%
Down to Earth Citrus Mix 6-3-3 | 25lb - OMRI Listed
In stock
$36.88 $54.99 -33%
CYCO 5L Potash Plus (2/CS) - (Case of 2)
In stock
$36.86 $67.05 -45%
Neptune's Harvest Seaweed Plant Food 0-0-1 | 1gal - Concentrate - Makes 128gal - OMRI Listed - (Case of 4)
In stock
$36.81 $48.99 -25%
Save 15%
Roots Organics Terp Tea Bloom | 9lb - (Case of 3)
In stock
$36.61 $42.99 -15%
FoxFarm Cultivation Nation Micro, 1 gal
Out of stock
$36.58 $54.85 -33%
Athena's Aminas, 1 gal
In stock
$36.49 $51.99 -30%
Mega Morpheus, 1 gal
Out of stock
$36.49 $51.99 -30%
Pegasus Potion, 1 gal
In stock
$36.49 $51.99 -30%
The Kraken, 1 gal
Out of stock
$36.49 $51.99 -30%
FoxFarm Open Sesame Soluble Fertilizer 5-45-19 | 1lb Jar
In stock
$36.48 $52.99 -31%
FoxFarm Beastie Bloomz Fertilizer 0-50-30 | 1lb
In stock
$36.48 $52.99 -31%
HDI Clonex Rooting Gel | 250ml - Wide Mouth Bottle
In stock
$36.47 $48.02 -24%
Soul LBS, 3 lb
In stock
$36.42 $52.46 -31%
SUPERthrive Pure Neem Oil Organic Leaf Polish | 32oz - (Case of 12)
In stock
$36.26 $59.25 -39%
Down to Earth Starter Mix 3-3-3 | 50lb - OMRI Listed
In stock
$36.13 $102.29 -65%
Show another 128 products
Product filters
Free Shipping
In Stock
Nutrient Material
Price
$
–
$
  • $1
  • $41472
Shop Owner
Brand
    Show all (91)