0Cart

Nutrients & Supplements

Soil Amendments
Sort by:
Price: High to Low
Show:
64
Down to Earth Alfalfa Meal 2.5-0.5-2.5 | 25lb - OMRI Listed
In Stock: 1051
$39.99
General Hydroponics Flora Series Trial Pack | 3pc - 32oz FloraMicro, 32oz FloraGro, and 32oz FloraBloom
In Stock: 290
$39.97
Down to Earth Soluble Root Growth Enhancer | 1lb - OMRI Listed - (Case of 6)
Out of stock
$39.89 $59.99 -34%
Down To Earth Fruit Tree 6-2-4 | 25lb - OMRI Listed
In Stock: 311
$39.87 $53.89 -26%
Down To Earth Rose & Flower Mix 4-8-4 | 25lb - OMRI Listed
In Stock: 177
$39.87 $53.89 -26%
HDI Clonex Rooting Gel | 250ml - Wide Mouth Bottle
In Stock: 921
$39.81 $48.02 -17%
Neptune's Harvest Seaweed Plant Food 0-0-1 | 1gal - Concentrate - Makes 128gal - OMRI Listed - (Case of 4)
In Stock: 28
$39.76 $49.49 -20%
Grotek Blossom Blaster, 130 g
In Stock: 2254
$39.76 $70.66 -44%
Age Old Grow, 1 gal
In Stock: 25
$39.69 $48.99 -19%
Down to Earth Bat Guano 7-3-1 | 10lb - OMRI Listed
In Stock: 245
$39.65 $49.99 -21%
HDI Ionic Grow Plant Nutrient 3-1-5 | 1gal - (Case of 4)
In Stock: 73
$39.49 $46.24 -15%
Royal Gold Imperial Boost 0-15-11 | 10lb - (Case of 4)
In Stock: 31
$39.37 $46.99 -16%
Down to Earth Acid Mix 4-3-6 | 25lb - For Acid Soil Loving Plants
In Stock: 397
$39.27 $52.99 -26%
BioAg Ful-Power | 1 gal
In Stock: 112
$39.24 $52.99 -26%
BioAg Ful-Power | 1 gal (ID,IL,IA,KS,MN,NE,OH,OK,OR)
In Stock: 7
$39.24 $52.99 -26%
HDI Ionic Bloom Plant Nutrient 3-2-6 | 1gal - (Case of 4)
In Stock: 104
$39.18 $46.24 -15%
FoxFarm Grow Big Hydro Liquid Concentrate, 2.5 gal
In Stock: 26
$39.16 $253.84 -85%
Royal Gold Crown Jewels Bloom 1-4-2 | 10lb - (Case of 4)
In Stock: 76
$39.08 $46.99 -17%
Royal Gold Crown Jewels Grow 3-2-2 | 10lb - (Case of 4)
In Stock: 140
$39.08 $46.99 -17%
Rhizoflora Terpinator 0-0-4 - 1gal
In Stock: 2
$39.00 $73.22 -47%
Remo Micro, 4 L
Out of stock
$38.99 $52.99 -26%
Remo Magnifical, 4 L
Out of stock
$38.99 $52.99 -26%
Down to Earth Starter Mix 3-3-3 | 25lb - OMRI Listed
Out of stock
$38.89 $51.79 -25%
Neptune's Harvest Fish Fertilizer 2-4-1 | 1gal - Concentrate - OMRI Listed - (Case of 4)
In Stock: 107
$38.62 $48.49 -20%
Botanicare Silica Blast 0-0-0.5 - 1gal
In Stock: 135
$38.52 $54.78 -30%
Roots Organics Oregonism XL Root Growth Enhancer | 1lb - (Case of 12)
In Stock: 17
$38.22 $54.99 -30%
Great White Premium Mycorrhizae, 4 oz
In Stock: 199
$37.54 $44.99 -17%
Grotek Vitamax Pro 1-1-1 | 4L - (Case of 4)
In Stock: 108
$37.37 $85.79 -56%
FoxFarm Grow Big Liquid Concentrate, 2.5 gal
Out of stock
$37.27 $241.57 -85%
FoxFarm Tiger Bloom Liquid Concentrate, 2.5 gal
Out of stock
$37.12 $241.61 -85%
Down To Earth Vegetable Garden 4-4-4 | 25lb - OMRI Listed
In Stock: 81
$36.95 $49.99 -26%
Down to Earth All-Purpose Mix 4-6-2 | 25lb - OMRI Listed
In Stock: 340
$36.95 $49.99 -26%
HYGROZYME Horticultural Horticulture Enzyme Formula | 1L (0.26gal)
In Stock: 24
$36.91 $39.00 -5%
House & Garden Cocos A, 5 L
In Stock: 332
$36.75 $49.48 -26%
House & Garden Cocos B, 5 L
In Stock: 204
$36.75 $49.48 -26%
House & Garden Soil A, 5 L
In Stock: 22
$36.75 $49.48 -26%
House & Garden Soil B, 5 L
In Stock: 112
$36.75 $49.48 -26%
Plant Success Orca | 16oz
In Stock: 54
$36.71 $44.11 -17%
SUPERthrive Root-Gel Rooting Gel | 8oz - (Case of 12)
Out of stock
$36.61 $51.99 -30%
Grotek Insta-Green 3-0-0 | 4L - (Case of 4)
In Stock: 47
$36.57 $44.99 -19%
Botanicare Hydroplex Bloom 0-10-6 - 32oz
In Stock: 103
$36.48 $50.89 -28%
Plant Success Great White Premium Mycorrhizae | 4oz
In Stock: 166
$36.45 $45.16 -19%
Down to Earth Liquid Bone Meal 0-12-0 | 1gal - (Case of 4)
Out of stock
$36.27 $48.99 -26%
Magnesium Sulfate Epsom Salts | 50lb (49/PL) - OMRI Listed
In Stock: 1494
$36.25
Nectar for The Gods Olympus Up | 1gal - (Case of 4)
In Stock: 4
$36.17 $42.99 -16%
Roots Organics Uprising Bloom, 9 lbs
In Stock: 7
$36.09 $48.59 -26%
Roots Organics Uprising Foundation, 9 lbs
In Stock: 297
$36.09 $48.59 -26%
Roots Organics Uprising Grow, 9 lbs
In Stock: 164
$36.09 $48.59 -26%
DaKine 420 Atomic Root Powder | 1,000g - (Case of 4)
In Stock: 8
$35.98 $144.99 -75%
Down to Earth Fish Bone Meal 4-12-0 | 25lb - OMRI Listed
In Stock: 169
$35.98 $48.99 -27%
Technaflora B.C. Boost, 4 L
In Stock: 32
$35.94 $52.99 -32%
CYCO 5L Kleanse (2/CS) - (Case of 2)
In Stock: 2
$35.76 $50.04 -29%
Big Foot Mycorrhizae Gold | 4oz
In Stock: 57
$35.72
FoxFarm Bush Doctor Microbe Brew Microbial Inoculant 1-0.3-0.2 | 32oz - Concentrate
In Stock: 166
$35.72 $40.99 -13%
HDI Ionic PK BOOST Plant Nutrient 0-5-6 | 2.5gal - (Case of 2)
In Stock: 39
$35.64 $99.65 -64%
Mad Farmer Oxygenator, 6 gal
In Stock: 77
$35.44 $209.99 -83%
HEAVY 16 Foliar, 32 oz
In Stock: 185
$35.42 $52.49 -33%
CYCO 5L Potash Plus (2/CS) - (Case of 2)
In Stock: 30
$35.33 $67.05 -47%
Grotek Pro-Silicate, 4 L
In Stock: 955
$35.25 $46.99 -25%
Roots Organics Rain, 1 qt
In Stock: 114
$35.21 $52.15 -32%
Grotek Blossom Blaster Pro 1-4-0 | 4L - (Case of 4)
In Stock: 52
$35.15 $104.29 -66%
MegaPhos SP Phosphorus Solubilizing Microbe | 2oz - OMRI Listed
Out of stock
$34.98 $36.57 -4%
Cutting Edge Solutions Louder Powder Grow A (15-0-0), 5 lb Bag
In Stock: 14
$34.96 $49.99 -30%
Cutting Edge Solutions Louder Powder Bloom B (0-25-24), 5 lb Bag
Out of stock
$34.96 $49.99 -30%
Show other 64 products
Product filters
Free Shipping
In Stock
Nutrient Material
Price
$
–
$
  • $0
  • $43740
Shop Owner
Brand
    Show all (87)