Welcome to Soil Supply Co.

We supply everything you need to build better soil

Organic soils, amendments, minerals and mulches you can trust. Every ingredient you need, all in one place. We give you the tools to build a stronger garden.
Build Your Soil
Contact Us

Nutrients & Minerals

Know what your soil needs? Start here.
Leaf & green growth
Roots & flower
Fruit & resilience
Cell wall strength
Chlorophyll core
Proteins & enzymes
Greening & enzymes
Cell walls & stems
Micronutrient spectrum
We choose ingredients for quality, not convenience.

Popular Amendments

Minerals, meals, and microbial inputs to build real fertility from the ground up.
Oyster Shell Lime, organic soil amendment — Soil Supply Co.
Oyster Shell Lime
From $9.60
Kelp Meal, organic soil amendment — Soil Supply Co.
Kelp Meal
From $9.60
AD: 1 - 0.5 - 5 & DP: 1.5 - 0.2 - 7
Bone Meal, organic soil amendment — Soil Supply Co.
Bone Meal
From $8.80
8.7 - 4.7 - 0.4
Azomite, organic soil amendment — Soil Supply Co.
Azomite
From $6.40
Alfalfa Meal, organic soil amendment — Soil Supply Co.
Alfalfa Meal
From $5.20
3.4 - 0.3 - 3.4
Raw Humates, organic soil amendment — Soil Supply Co.
Raw Humates
From $6.00
Fish Meal, organic soil amendment — Soil Supply Co.
Fish Meal
From $8.00
8 - 7 - 0.5
Waterfall Way Basalt, organic soil amendment — Soil Supply Co.
Waterfall Way Basalt
From $6.40
Neem Meal, organic soil amendment — Soil Supply Co.
Neem Meal
From $4.80
Insect Frass, organic soil amendment — Soil Supply Co.
Insect Frass
From $12.00
3 - 2 - 3
We stock the best, or nothing at all.
Premium organic inputs, delivered to your door.
We keep costs low with simple packaging and a lean team, so you pay for quality—not marketing.
About Us
Amendments
Amendments 35 products
Soil Bases
Soil Bases 3 products
Drainage & Aeration
Drainage & Aeration 6 products
Mulch
Mulch 4 products
Experience nature's true power.

Liquid Concentrates

Hops Ferment
Hops Ferment
$12.00

Customers are saying

5.00 ★ (3)
Verified

Grow With Confidence

Practical guides, tips and soil knowledge to help every garden thrive.
Reading a Hungry Plant
July 8, 2026
Reading a Hungry Plant
A struggling plant is telling you exactly what it's short on, if you know where to look first. Here's how to read the signs, why it's usually lockout and not shortage, and which amendment actually fixes each real deficiency.
Building a Living Soil: A Starter Guide
July 8, 2026
Building a Living Soil: A Starter Guide
A living soil fertilises itself: build it once, feed the microbes instead of the plant, and reuse it for years. Here's what goes in, in what order, and why you don't need every amendment to get it right.
How Much Soil Do I Need?
July 8, 2026
How Much Soil Do I Need?
Most people order soil twice: a wrong guess, then a top-up delivery to finish the job. Here's the two-minute formula, and the depth guide, that gets you one number and one order.
Visit the blog