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 P
Starting at:
$1,578.93
Roots Organics Terp Tea Grow
Starting at:
$37.99
Advanced Nutrients Voodoo Juice
Starting at:
$598.78
Stump Tea
Starting at:
$39.95
Roots Organics Terp Tea Bloom
Starting at:
$37.99
Roots Organics Oregonism XL
Starting at:
$22.49
Roots Organics Phos Bat Guano
Starting at:
$9.54
Great White
Starting at:
$245.00
Roots Organics Bio Force
$1,399.95
Black Worm Castings
Starting at:
$33.95
Advanced Nutrients Tarantula Liquid
Starting at:
$59.88
Roots Organics Seabird Guano
Starting at:
$9.59
Roots Organics Nitro Bat Guano
Starting at:
$11.99
Stump Tea Veg Boost
Starting at:
$39.95
Roots Organics Terp Tea Microbe Charge
$29.99
Roots Organics Terp Tea Bloom Booster
Starting at:
$27.99
Stump Tea Sweetener
Starting at:
$39.95
Vermiculite - 8 Quart Bag
$5.49
Happy Frog Soil Conditioner 3.0 Cubic Feet
$26.00
FoxFarm Bush Doctor Microbe Brew
Starting at:
$78.71
Pahroc Giant Perlite #3 - 1.5 Cubic Feet
$23.95
Pelletized Peruvian Sea Bird Guano 10-10-1
Starting at:
$30.50
Roots Organics Fish Protein
$120.99
Perlite - 8 Quart Bag
$7.95
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