Soil Tonic - Fertiliser Concentrate 600g

Name: Soil Tonic - Fertiliser Concentrate 600g
Brand: Nesty Boxes
SKU: 1161
Price: 39.95 AUD
Availability: InStock

Just add water! The Nutrient Soil Conditioner, Containing Fulvic Acid and Kelp Flakes.

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1. Choose Your Size

Size $39.95/Pouch 1 Pouch $35.00/Pouch 2 Pouches

Save 12%

$30.00/Pouch 4 Pouches

Save 24%

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One-time Purchase

$39.95

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Others also added

Soil Booster - Veggie Garden Cover Crop 950g

$29.95

Also suitable for:

Veggies

Lawn

View full details

More Value Than Liquid Fertilisers

Unlike diluted liquid products, Soil Revival contains no water or fillers. You add the water yourself, meaning you get more nutrients per gram, better value for money, and lower shipping costs.

Helps Roots Absorb Nutrients Better

Fulvic acid helps move nutrients from the soil into plant roots more easily. This improves nutrient use, supports stronger root systems, and helps plants grow more evenly.

Makes Up To 300L Of Soil Tonic

This is a concentrate, so a small amount mixes into a large tank. One pack can make up to 300 litres of usable solution, giving you far more applications for the money and big savings over time compared to ready made liquids.

Because your garden
deserves better

Just add water. The ultimate root booster!

Soil Tonic is a concentrated blend of fulvic acid and kelp flakes designed to wake plants up fast. Mixed with water and applied easily, it helps roots absorb nutrients more efficiently and supports healthy growth. Ideal for lawns, gardens, and ornamentals when plants need a quick boost without heavy fertilisers.

Frequently Asked Questions

How do I know what fertiliser to use?

We offer a wide range of natural, Australian made fertilisers and it is no surprise it can get tricky deciding which one is right for you. If you are looking for a liquid fertiliser, the Soil Tonic will help stimulate root growth and development more so than the Soil Revival which focuses on soil pH and health. Our biologically activated rock mineral fertilisers purpose is best represented by the packaging. Soil Fusion is our all rounder and best multi purpose choice. Soil Bloom works amazingly on fruit trees and vegetables. Lawn Booster is for turf and acreage.

Why choose Nesty Boxes fertilisers over competitors?

Nesty Boxes formulations are built on science, agronomy, and real field results. Every product is developed with input from agronomists and garden specialists to ensure it delivers genuine, measurable plant and soil benefits. We are Australian owned and operate locally, sourcing our rock minerals from Western Australia, our calcium carbonate from New South Wales, and using Australian ingredients wherever possible. Unlike many competitors selling synthetic, water heavy or quick fix fertilisers, Nesty focuses on long term soil health. Our products support microbial activity, improve soil structure, and deliver sustained nutrient availability rather than short lived chemical spikes. With Nesty, you’re feeding the soil as well as the plant, a foundation for healthier, more resilient gardens.

What is soil tonic?

Soil Tonic is a premium soluble blend of fulvic acid, Ascophyllum nodosum kelp flakes, potassium, organic carbon, and naturally occurring trace elements. It mixes instantly with water and can be applied as a soil drench or foliar spray.

What do the nutrients in Soil Tonic actually help with?

Fulvic Acid Improves nutrient uptake and transport Enhances root efficiency and nutrient exchange Helps plants access bound minerals in the soil Ascophyllum nodosum Kelp Contains natural plant hormones that stimulate growth Supports stress tolerance, root expansion, and recovery Feeds soil microbes and improves biological activity Potassium (K₂O ~10 percent) Improves drought, heat, and disease tolerance Supports strong flowering and fruit development Helps regulate water movement within the plant Organic Carbon (~25 percent) Feeds beneficial microbes in the soil Improves soil structure and long-term fertility Enhances nutrient cycling Trace Elements (Fe, Mn, Zn, Cu, B) Support enzyme function and photosynthesis Improve colour, growth uniformity, and plant resilience Essential for fruit, flower, and foliage quality

How long will a 600g packet last?

A 600 g packet provides excellent coverage because the formula is highly concentrated. Veggie gardens (4 g per litre): Makes 150 litres of solution Covers 150–1,500 m² depending on how heavily you apply it Lawns (2 g per litre): Makes 300 litres of solution Covers 300–3,000 m² A single 600 g pack is enough for multiple applications across an entire backyard, making it far more economical than premixed liquid fertilisers.