Soil Amendments

Soil Amendments

Improve your garden with soil amendments from HTG Supply! With popular brands including Organic Mechanics, Growstone and Down to Earth, our selection of soil amendments will allow you to give your plants the best chance for maximum growth!

We offer both complete garden soil and soil amendments which allow you to directly treat your soil. Shop today!

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Newest Soil Amendments

Most Popular in Soil Amendments

Mammoth Microbes P
Mammoth P
Starting at:
$1,578.93
Roots Organics Terp Tea Grow
Roots Organics Terp Tea Grow
Starting at:
$37.99
Adv Voodoojuice
Advanced Nutrients Voodoo Juice
Starting at:
$598.78
Nut Htg St004
Stump Tea
Starting at:
$39.95
Roots Organics Terp Tea Bloom
Roots Organics Terp Tea Bloom
Starting at:
$37.99
Oregonism Xl
Roots Organics Oregonism XL
Starting at:
$22.49
Roots Organics Phos Bat Guano
Roots Organics Phos Bat Guano
Starting at:
$9.54
Great White Nutrient
Great White
Starting at:
$245.00
Roots Organics Bio Force Biological Inoculant
Roots Organics Bio Force
$1,399.95
Worm Castings 5 Pound Vermitechnology Black Castings
Black Worm Castings
Starting at:
$33.95
Advanced Nutrients Tarantula Liquid 1L
Advanced Nutrients Tarantula Liquid
Starting at:
$59.88
Roots Organics Seabird Guano
Roots Organics Seabird Guano
Starting at:
$9.59
Nitogen Bat Guano
Roots Organics Nitro Bat Guano
Starting at:
$11.99
Nut Htg Stvb004
Stump Tea Veg Boost
Starting at:
$39.95
Roots Organics Terp Tea Microbe Charge 3Lb Front
Roots Organics Terp Tea Microbe Charge
$29.99
Terp Tea Bloom Booster 3lb
Roots Organics Terp Tea Bloom Booster
Starting at:
$27.99
Nut Htg Stsw01
Stump Tea Sweetener
Starting at:
$39.95
Black Gold Vermiculite 8 Quart Bag
Vermiculite - 8 Quart Bag
$5.49
Happy-Frog-Soil-Conditioner
Happy Frog Soil Conditioner 3.0 Cubic Feet
$26.00
Foxfarm Bush Doctor Microbe Brew
FoxFarm Bush Doctor Microbe Brew
Starting at:
$78.71
Pahroc Perlite Number 3 - 1.5 cuft
Pahroc Giant Perlite #3 - 1.5 Cubic Feet
$23.95
Guano Pellet Seabird 10101
Pelletized Peruvian Sea Bird Guano 10-10-1
Starting at:
$30.50
Roots Organics Fish Protein Soluble Nitrogen
Roots Organics Fish Protein
$120.99
Black Gold Perlite 8 Quart Bag
Perlite - 8 Quart Bag
$7.95

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