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
From:
$47.77$1,578.93
Roots Organics Terp Tea Grow
Roots Organics Terp Tea Grow
From:
$13.99$37.99
Adv Voodoojuice
Advanced Nutrients Voodoo Juice
From:
$42.34$598.78
Nut Htg St004
Stump Tea
From:
$14.95$39.95
Roots Organics Terp Tea Bloom
Roots Organics Terp Tea Bloom
From:
$13.99$37.99
Oregonism Xl
Roots Organics Oregonism XL
From:
$8.99$22.49
Roots Organics Phos Bat Guano
Roots Organics Phos Bat Guano
From:
$9.54
Great White Nutrient
Great White
From:
$14.27$245.00
Advanced Nutrients Tarantula Liquid 1L
Advanced Nutrients Tarantula Liquid
From:
$42.34$59.88
Roots Organics Bio Force Biological Inoculant
Roots Organics Bio Force
From:
$12.95
Roots Organics Seabird Guano
Roots Organics Seabird Guano
From:
$9.59
Worm Castings 5 Pound Vermitechnology Black Castings
Black Worm Castings
From:
$8.95$33.95
Nitogen Bat Guano
Roots Organics Nitro Bat Guano
From:
$11.99
Nut Htg Stvb004
Stump Tea Veg Boost
From:
$14.95$39.95
Roots Organics Terp Tea Microbe Charge 3Lb Front
Roots Organics Terp Tea Microbe Charge
From:
$29.99
Terp Tea Bloom Booster 3lb
Roots Organics Terp Tea Bloom Booster
From:
$27.99
Nut Htg Stsw01
Stump Tea Sweetener
From:
$14.95$39.95
Black Gold Vermiculite 8 Quart Bag
Vermiculite - 8 Quart Bag
$5.49
Foxfarm Bush Doctor Microbe Brew
FoxFarm Bush Doctor Microbe Brew
From:
$23.96$78.71
Pahroc Perlite Number 3 - 1.5 cuft
Pahroc Giant Perlite #3 - 1.5 Cubic Feet
$23.95
FoxFarm Happy Frog Soil Conditioner 1.5 Cubic Foot
Happy Frog Soil Conditioner 3.0 Cubic Feet
From:
$20.95
Guano Pellet Seabird 10101
Pelletized Peruvian Sea Bird Guano 10-10-1
From:
$7.40$30.50
Roots Organics Fish Protein Soluble Nitrogen
Roots Organics Fish Protein
From:
$21.99
Black Gold Perlite 8 Quart Bag
Perlite - 8 Quart Bag
$7.95

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