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A close look at the nutrition of Jeffries CulChar

Jeffries latest innovation, Jeffries CulChar, is a complete, certified organic, slow-release fertiliser, including essential trace elements and minerals. The inclusion of Jeffries BioChar works together with the organic carbon of the included compost as a long-term soil conditioner. Jeffries CulChar is a very complete and cost-effective nutritional offer that is safe to use in direct contact with plants and their root systems.

Let’s take a closer look at how Jeffries CulChar works and compare how it performs next to other organic fertiliser alternatives.


Jeffries CulChar is a slow-release, general-purpose fertiliser pellet that allows for broadcast distribution or a more focused use in specific areas. For a more concentrated effect Jeffries CulChar can be sown directly into furrow with seeds or seedlings as a very plant safe and naturally effective fertiliser.

Balanced and Protected Nutrition for Progressive Growth

With a balanced 3:1:1 ratio of Nitrogen, Phosphorus, and Potassium, Jeffries CulChar still remains nutritionally available in the most extreme soil profiles, ensuring all types of crops receive a comprehensive and balanced nutrient supply.

Enhanced Soil Health and Functionality

Jeffries CulChar goes beyond traditional fertilisers by not only nourishing plants but also improving soil health and functionality. The concentrated organic matter within Jeffries CulChar introduces a diverse micro-biome to the soil, fostering a thriving ecosystem beneath the surface. This has a positive impact on root system health, disease and stress resistance, and overall plant vigour. Furthermore, the inclusion of a 30% organic carbon and Jeffries BioChar blend enhances mineralisation of soil nutrition, improves water retention, increases porosity, aids in salt-buffering, and enhances the soil’s capacity for nutrient exchange.

Cost-Effective and Nutrient-Rich

When comparing it to popular organic alternatives like seaweed, kelp, worm, or fish emulsion mixes, Jeffries CulChar stands out as a cost-effective and nutrient-rich option. A comprehensive analysis reveals that Jeffries CulChar provides a reliable source of essential trace elements, which are crucial for preventing nutrient deficiencies in plants. In contrast, many commonly used synthetic fertilisers lack these vital trace elements.

Even among organic choices, the levels of trace elements can be quite low and not very functional. It is clear from the comparative analysis chart (refer below) that some popular organic alternatives do not carry much supporting nutrition and must rely on other variable properties such as metabolites, enzymes, or possibly hormones to achieve some effect.

The composting process does mean that Jeffries CulChar contains these types of micro-ingredients as well, but Jeffries CulChar also contains a significant range of beneficial compost-origin microbes. By choosing Jeffries CulChar, you can ensure that your plants receive a very comprehensive, ongoing, and balanced nutrient supply.

scientist putting soil into test tube
typical analysis table of Jeffries CulChar

pH Neutral and Safe for All Plants

One of the notable advantages of Jeffries CulChar is its pH neutrality, which guarantees the safety and well-being of your plants during application. Unlike highly alkaline seaweed and kelp solutions or acidic fish emulsions, Jeffries CulChar maintains a balanced pH level and a very root-friendly attraction. This eliminates the risk of plant damage seen when others are not adequately diluted. The slow-release formulation and certified organic nature of Jeffries CulChar makes it a reliable and safe choice for all plants, including all native Australian species.

Added benefits of Jeffries BioChar

Jeffries CulChar includes the added benefits of Jeffries BioChar; manufactured on-site at the Jeffries composting facility for the best quality control; and designed specifically for agricultural use to perform many important soil and crop health functions. Jeffries BioChar works in tandem with the organic carbon of compost as a very long-term soil conditioning agent to enable better water-holding, structure, porosity, and aggregation. Jeffries BioChar has a microscopic honeycomb latticework that is naturally ionically charged to attract both positive and negatively charged minerals which ensures a more effective and balanced nutrition availability around a plants root zone, the rhizosphere. This special feature of Jeffries BioChar enables it to act as both a storage and exchange repository of nutrition for a plant, and the Jeffries BioChar particles are often observed as being stuck onto or wrapped up within the plant’s rhizosphere.

Jeffries BioChar also performs a very important function as a long-term home for beneficial soil and plant microbes. A strong microbiome surrounding plants is a guarantee of improved plant health including a far stronger ability to resist environmental stress and disease. Jeffries BioChar ensures all the benefits of the organically certified nutrition and soil health fertility in Jeffries CulChar are well-delivered and preserved.

Promoting Healthy Stems and Leaves

Jeffries CulChar’s significant organic calcium component (5% w/w) contributes to the development of robust stems and leaves, forming the foundation for balanced plant growth. However, Jeffries CulChar’s benefits extend far beyond calcium. Its organic composition, enriched through the composting process, includes metabolites, enzymes, and other compounds that support overall plant nutrition. The positive effects on soil biology further enhance the soil’s capacity to provide optimal nutrition and create an environment conducive to healthy plant growth.


Jeffries CulChar is a complete certified organic fertiliser that covers all the nutritional needs for ongoing crop support. Unlike many other fertilisers, Jeffries CulChar includes essential trace elements, minerals, beneficial compost biology, soil fertility properties and the on-going benefits of Jeffries BioChar. A very complete and cost-effective nutritional offer that is safe to use in direct contact with plants and their root systems for a far healthier and balanced crop.

Speak to your horticulture account manager today!

Aaron Matthews Ward
0427 923 699
[email protected]


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If we dig deeper, we find that compost helps to save on water in a few different ways.

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