Soil Supply Co.

Soil amendments, minerals, living soils and growing media

Single-ingredient amendments, rock dusts, liquid concentrates, living soils, mulches and soil bases. Shipped Australia-wide.
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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.

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Living Soils
Living Soils
Amendments
Amendments
Liquids
Liquids
DARK-MATTER – Living Rhizosphere Myco-Cosm, organic plant booster — Soil Supply Co.
Plant Boosters
Effective Microorganism Concentrate, liquid soil input — Soil Supply Co.
Microbes & Inoculants
Compost & Worm Castings 50/50 Blend — Soil Supply Co.
Compost
Worm Castings
Worm Castings
Soil Bases
Soil Bases
Drainage & Aeration
Drainage & Aeration
Mulch
Mulch
Seabird Guano (High P/Si), organic soil amendment — Soil Supply Co.
Guanos
Oyster Shell Lime, organic soil amendment — Soil Supply Co.
Lime & pH Buffers
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Popular Amendments

Minerals, meals, and microbial inputs to build real fertility from the ground up.
Alfalfa Meal, organic soil amendment — Soil Supply Co.
Alfalfa Meal
From $5.20
3.4 - 0.3 - 3.4
Oyster Shell Lime, organic soil amendment — Soil Supply Co.
Oyster Shell Lime
From $9.60
Azomite, organic soil amendment — Soil Supply Co.
Azomite
From $6.40
Bone Meal, organic soil amendment — Soil Supply Co.
Bone Meal
From $8.80
8.7 - 4.7 - 0.4
Kelp Meal, organic soil amendment — Soil Supply Co.
Kelp Meal
From $9.60
AD: 1 - 0.5 - 5 & DP: 1.5 - 0.2 - 7
Volcanic Ash, organic soil amendment — Soil Supply Co.
Volcanic Ash
From $4.80
Sold Out
Waterfall Way Basalt, organic soil amendment — Soil Supply Co.
Waterfall Way Basalt
From $6.40
Raw Humates, organic soil amendment — Soil Supply Co.
Raw Humates
From $6.00
Langbeinite, organic soil amendment — Soil Supply Co.
Langbeinite
From $6.40
0 - 0 - 21
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
Experience nature's true power.

Liquid Concentrates & Ferments

Hops Ferment
Hops Ferment
From $12.00
Equisetum Ferment
Equisetum Ferment
From $9.00

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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.
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