Sustainable solutions

For healthier soil

At Onnu Biochar, you can buy premium-quality biochar products designed to enhance soil health, improve water retention, and contribute to sustainability efforts. Whether you’re a home gardener, landscaper, or a large-scale agricultural project manager, our biochar is an ideal solution for boosting soil fertility. Read on to discover why buying biochar from Onnu is the right choice for your soil and the planet.

What is

Biochar?

Biochar is a stable, carbon-rich material produced through the process of pyrolysis, where organic materials like woodchips or agricultural waste are heated in a low-oxygen environment. This process not only results in biochar but also captures energy and reduces harmful greenhouse gas emissions, making biochar a carbon-negative product. Biochar’s unique structure enhances soil’s ability to retain water, nutrients, and promotes microbial activity, offering a sustainable soil improvement solution.

Why Buy Biochar?

Biochar offers a wealth of benefits that make it a must-have for anyone looking to improve soil, enhance plant growth, and promote sustainability. When you buy biochar, you unlock the following advantages:

How does biochar enhance soil aeration and water retention?

Biochar's unique porous nature enhances soil aeration and water retention, which is crucial for healthy plant root development.

How does Biochar help in Nutrient Retention?

Biochar acts like a sponge, holding nutrients in the soil and preventing them from leaching away, ensuring plants have access to essential nutrients over time.

How does biochar help in soil pH Modification?

Biochar's alkaline nature can help balance soil pH, making it more conducive for a wider variety of plants to thrive.

How does biochar enhance Microbial Activity?

Biochar supports the growth of beneficial soil microbes, essential for decomposing organic matter and cycling nutrients in both gardens and landscapes.

How does biochar contribute to Pollution Remediation?

Biochar has adsorptive qualities that can bind and neutralize soil contaminants, making it useful in landscaping and construction projects in urban areas.

How does biochar Improve Soil Structure?

Biochar reduces soil compaction, encouraging root growth and improving overall soil health.

How does biochar build Drought Resilience?

Biochar’s water-retaining properties help plants survive in areas with inconsistent rainfall or dry seasons.

Who should buy

Biochar?

Biochar isn’t just for large-scale agricultural operations. It’s an ideal product for home gardeners, landscapers, farmers, and even the construction industry.

Read on to see how different groups benefit from purchasing biochar.

Why should home gardeners buy biochar?

For those looking to improve their soil’s fertility and structure, biochar is a game-changer. Onnu’s range of pure biochar and biochar blends are perfectly suited for small garden beds and landscapes, offering a simple and eco-friendly way to improve plant health. 

Why should landscape project developers buy biochar?

Larger-scale applications benefit from Onnu’s bulk biochar options. Applying biochar in bulk to landscapes brings tremendous soil enhancement in parks and green spaces. 

Why should Horticulturists and Nurseries buy biochar?

Biochar is ideal for soil mixes, offering better water retention and healthier plant growth for potted plants, trees, and shrubs. 

Why should the Construction Industry buy biochar?

Biochar can be incorporated into construction materials like concrete, offering not only enhanced durability but also sustainability benefits. 

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Why

Onnu Biochar?

Scale

As the leading manufacturer of biochar in the UK - our high-tech, environmentally friendly manufacturing sites efficiently deliver high-quality biochar at scale to meet the nation's growing demand.

Consistent

Our UK manufacturing sites consistently produce high-quality biochar products and compost mixes for a range of different sectors across the UK.

Reliable

As a trusted UK biochar manufacturer, our partners can rely on us to ensure on-time delivery, flexible transportation solutions, and a dependable service from enquiry through to delivery and ongoing advice.

How to buy biochar

from onnu biochar

How to buy biochar in retail?

Step 1: Choose Your Biochar Product 

Head to our ecommerce website Onnu Biochar. Select from our range of pure biochar and biochar blends depending on your requirements and application type. Each bag is filled with premium biochar produced using sustainable practices. 

Step 2: Add to Cart 

Once you’ve chosen the product that fits your needs, simply add it to your cart and proceed to checkout. Our easy-to-use Shopify store ensures a smooth purchasing experience. 

Step 3: Get Fast, Eco-Friendly Delivery 

We offer fast delivery with minimal environmental impact. Our shipping options are designed to get biochar to you efficiently, reducing the carbon footprint of your purchase. 

Step 4: Apply Biochar to Your Soil 

Once your biochar arrives, apply it according to your project’s specific needs. Whether you’re mixing it into compost, blending it with topsoil, or using it in construction materials, Onnu biochar delivers long-term benefits for both your project and the environment. 

How to buy biochar in bulk?

Step 1: Choose Your Biochar Product 

Head to our ecommerce website Onnu Biochar. Select from our range of pure biochar and biochar blends depending on your requirements and application type. Each bag is filled with premium biochar produced using sustainable practices. 

Step 2: Fill out the trade enquiries form 

Once you’ve decided on the product that fits your needs, head to our trade enquiries form. Fill in your details and requirements. Our team of experts will be in touch with you! 

Make a sustainable choice

Buy Biochar today

Biochar isn’t just a product – it’s a sustainable solution for the future. By buying biochar from Onnu, you’re investing in healthier soil, better water management, and a brighter environmental future. Explore our biochar options today, and find the right solution for your project!

FAQs

How do I determine the right application rate of biochar for my soil? 

The application of biochar varies vastly based on your soil type and goals. For pure biochar, here are some common factors to keep in mind to get the most out of its benefits: 

  • Mixing Ratio: Use 10-20% biochar by volume when mixing into soil or compost. 
  • Depth: Biochar is most effective when incorporated around plant roots and therefore best used at time of planting. If using on established plants, top dressing can be applied in small regular volumes to slowly be drawn down into the soil. 
  • Root Application: 10-20% by volume around roots. 
  • Watering: Water the area after applying biochar to help integrate it into the soil. (Avoid overwatering) 

For further details, you can head to our website where guidance on application rates can be found under the 'Application Rates' tab of each product page. 

Can biochar be used with other fertilizers or soil amendments? 

Pure biochar product can be mixed with other fertilizers and soil amendments to best suit your needs. For customers ease, we also have a range of ready-made biochar and soil amendment blends for a variety of applications. Please see our Products page for more information.

How long does it take to see the effects of biochar in my soil? 

Biochar works gradually to enhance soil structure, water retention, and nutrient availability, with its impact becoming more pronounced as it integrates into the soil ecosystem over time. Generally, some improvements may be noticed within one growing season, however this can vary depending on a range of conditions such as the weather, soil type and plant species.

Is biochar safe for all types of plants, including vegetables and flowers? 

We can assure that our products are completely safe for use as soil amendments for any plants. Onnu's biochar products are peat-free, eco-friendly and are specially curated with trees, lawns, turf, vegetable and flowering plants in mind.

Can biochar be used in both indoor and outdoor gardening? 

Yes! Biochar is extremely versatile, making it ideal for both indoor and outdoor use.

How does biochar impact soil pH levels? 

Biochar is slightly alkaline, making it the ideal soil amendment to neutralize acidic soils.

What is the shelf life of biochar? 

Biochar has an exceptionally long shelf life. When stored properly in a dry environment, it can remain stable and effective for years, even decades.

How does biochar help with water conservation in soil? 

Biochar helps with water retention in soil due to its highly porous structure, which acts like a sponge, absorbing and holding water. This property allows the soil to maintain moisture for longer periods, reducing the need for frequent watering and helping plants withstand drought conditions.

How is the effect of biochar on contaminated soil? 

When applied to soil, biochar is able to form strong bonds with organic contaminants, heavy metals etc. which allows for their complete immobilization. This prevents these contaminants from affecting plant growth and depleting the overall quality of the soil.

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