Nutrifield Substrate Booster 20L | Compost & Humate Soil Conditioner
$35.00 inc. GST
Compost and humate blend designed to boost soil biology, improve structure, and enhance nutrient uptake for stronger plant growth.
Full product description
Nutrifield Substrate Booster 20L is a powerful soil conditioning blend designed to regenerate, enrich, and optimise your growing media for stronger, healthier plants. Made from a premium mix of 70% compost and 30% lignite humate, this product delivers a rich source of organic matter, beneficial microbes, and humic substances to transform your substrate into a thriving biological environment.
This booster works by inoculating and stimulating microbial life within your media, encouraging beneficial fungi such as mycorrhizae while activating bacteria through humic and fulvic acids. The result is improved nutrient cycling, enhanced root development, and greater plant resilience under stress conditions.
In addition to boosting biology, Nutrifield Substrate Booster improves soil structure by increasing water retention and nutrient holding capacity. This reduces leaching and ensures nutrients remain available to your plants for longer periods, leading to more efficient feeding and better overall growth performance.
It also plays a key role in buffering sodium and stabilising growing conditions, making it especially beneficial in areas with challenging water quality or saline soils.
Suitable for soil, coco, and custom blends, this product can be used to build living soil systems, revitalise tired media, or enhance new mixes before planting. Whether you’re a home grower or running a commercial setup, Nutrifield Substrate Booster provides a simple, natural way to improve plant health, yield, and consistency.
Why Use This Product
- Boosts beneficial microbes and mycorrhizae
- Improves soil structure and water retention
- Enhances nutrient availability and uptake
- Buffers sodium and stabilises growing conditions
- Helps build living soil systems
- Ideal for revitalising old or depleted media
How to Use
Soil / Coco Mixing
- Mix 30% Substrate Booster with 70% base media
- Blend thoroughly before planting
- Water in well to activate microbial life
Living Soil Builds
- Use as part of your base mix (30%)
- Combine with amendments (e.g. dry nutrients)
- Fully saturate after mixing to activate biology
Top Dressing (Regeneration)
- Apply 1–2 inches across the surface
- Water in thoroughly
- Repeat as needed to refresh soil