Blog

SoilFixer Biochar Composts: The Autumn Essential for Healthier Soil
Recovery Season
As the growing season ends, our soils are depleted and the cold winter lies ahead. Autumn is the perfect time to restore soil health. With SoilFixer Biochar Composts, we offer a simple and effective way to guarantee a happy,…

SF60 Super Compost / Soil Improver Detailed Product Q&A
This article looks in detail at the SoilFixer SF60 Super Compost - what it is, how it is made, how it works and the benefits of using it.
How did we develop SF60 - A brief history
Tony Callaghan has a long track record in composting –…

What are compost activators
In gardening, the term compost activator is used to cover many products with names such as compost maker, accelerator, inoculator, catalyst, and humification agent also being used. In this article, we define the terms more precisely and use…

SoilFixer Approach: Eco-Friendly Products
The SoilFixer approach is to make eco-friendly, natural soil additives and fertilisers that help gardeners and growers improve soil fertility and, hence, increase the quality and quantity of flowers, fruit, vegetables, crops, and so on.
Use…

Biochar for Industrial Use
Industrial uses for Biochar
In this article, we look at the uses of biochar as a replacement for Activated Carbon derived from fossil fuels and other non-sustainable materials.
(Biochar for soil, gardening farming, agriculture etc are in…

Biochar and SF60 Application Rates
How much biochar (or SF60) should you add to your soil and compost?
In our Biochar and SF60 product pages, we simplify the application rate to “1 Kg/m2” (1 kilo per square metre of soil)
As we supply 10 and 20 Kg sacks, the maths…

SoilFixer Welcomes New Ownership as Brodie Family Takes the Lead
Tony Callaghan, founder of SoilFixer, is pleased to announce the sale of the business to Tom and Alex Brodie, who will continue to trade as SoilFixer through SoilFixer Ltd.
Over the past decade, Tony has built SoilFixer into one of the UK's…

Biochar to Improve Tree Growth and Survival In Woodlands, Forestry and Agroforestry
We are working with A Healthier Earth and the Blenheim Estate to increase tree survival and growth rates as they plant 500,000 trees on their estate. Alongside their commitments to the woodland environment, maintaining biodiversity, and using…

Can biochar be used to improve green roofs
Can biochar be used to improve green roofs?
The quick answer is a huge yes.
Let's look in a bit more depth at how biochar is used in green roofs
What is a green roof?
A green roof (also known as a 'living roof) is a roof on a building…

How to use the HOTBIN Mega compost bin on your allotment!
It's always a great time to start using the HOTBIN Mega compost bin on your allotment
Why Use the HOTBIN Mega Compost bin?
• Compost within 90 days, all year round
• Excellent quality compost
• Option to make Biochar Super Compost
•…

How do I make Amazonian Dark Earth (aka Terra Preta) in the HOTBIN Mega?
Amazonian Dark Earths (ADE) are thousands of years old and the recipe is long gone. We do not live in the Amazon Rain Forest, nor are UK soils and conditions the same as those in the Amazon. In truth, what we are suggesting is making the closest…

Biochar multi-purpose compost (SF40)
Peat-free biochar multi-purpose compost - why are we making it?
Most garden centres now stock peat-free multi-purpose compost. (More accurately they stock peat-free soilless growing media tailored for plant growth. Few of them actually contain…

Biochar for Anaerobic Digestion, Landfill Gas Filtration, PAS100 Compost Odours
Biochar improves methane output in anaerobic digestion (AD)
There are an increasing number of research papers indicating that activated carbon can be used to increase the conversion efficiency of methane made in an AD reactor - anywhere from…

Biochar – latest news on results and performance
There are now more than 15,000 published biochar papers.
This new meta-analysis paper is the biggest and most comprehensive meta-analysis of these papers to date.
The paper is at link: Biochar in agriculture – A systematic review…

Customer Services and Delivery
Covid-19 Latest Information on Deliveries
We continue to deliver via our chosen courier Parcelforce. Courier services currently working to normal 48-hour turnaround.
The collection of parcels from our stock warehouse can be undertaken…

Biochar for carbon sequestration
Biochar - sequestration diagram, C Steiner, 2008
Biochar to Tackle Climate Change
Biochar has an enormous potential to help mitigate climate change by locking (sequestering) the carbon into the soil. The detailed numbers can be overwhelming…

Is Biochar Sustainable
We look at how and why biochar is both sustainable and good for climate change. We go through a number of burning (!) questions people want answers for before they work with a biochar supplier.
Climate change is on everyone's mind. We have…

How to Activate and Inoculate Biochar
How do I activate and inoculate biochar?
There are four main methods
Soak the biochar in a dilute solution of liquid fertiliser for 1-3 days before use.
Mix the biochar with compost - leave it to stand for 6-12 weeks
Mix the biochar…

Packaging – paper, plastic and boxes
Why do we use woven plastic sacks and tape our cardboard boxes with plastic tape?
Most of our customers are deeply environmentally aware - using biochar and biochar super compost is as much about sustainable gardening as it is about beautiful…

Spring Lawn Care
You may have already made the first lawn cut of the year, if you haven't, start with a high blade and gradually reduce over the weeks to your preferred height. If your lawn is prone to moss and weeds, here we will explain how our biochar granules and SF60…

Biochar mitigates (offsets) climate change
Biochar mitigates climate change
Every gardener and farmer can help offset (mitigate) climate change by adding biochar or biochar super compost (SF60) to their soil.
1Kg of biochar carbon offsets 3.6 Kg CO2*
In this blog, we explore how biochar is…

Which biochar should you buy?
This blog looks at different grades of biochar and the benefits they can bring to soil health and to the garden.
Basic Biochar
We champion the 0-13mm granules as the “basic” (standard) grade of raw biochar.
Wood-based biochar granules…

Biochar: The non-starters
Followers of SoilFixer will be aware we are passionate about producing biochar that really improves plant health and growth. However, not all biochars are equal. In this guide, we rule out some “non-starter” biochars to be aware of.
Next…

Are SoilFixer products organic?
Are SoilFixer products organic?
The answer is yes.
But for those conversant with the organic movement lingo and legislation, we need to explain the difference between an organic product and inputs for use in an organic growing system.
Recently…

Biochar for Golf Greens and Garden Lawns
Enrich and Recover Golf and Garden Lawns
We have used SF60 super compost (a mix of activated biochar and humus) on our domestic garden lawn for a couple of years and have found it helps deepen the green colour, and it also seems to help…

Biochar for trees and woodlands
How to use biochar for healthier trees and woodlands
As many as a third of all new trees planted are likely to die within the first two years (reported via Independent and other studies). Many mature specimen trees of local and national importance…

What is Amazonian Dark Earth (ADE) also known as Terra Preta
Introduction
Amazonian Dark Earth (ADE) also known as Terra Preta ('black soil' in Portuguese), is highly fertile ancient man-made soil found in areas of the Amazon basin. With its exceptional fertility, scientists have been studying ADE in…

Giant Sunflowers using biochar super compost
Giant sunflowers are grown using biochar super compost
We planted our sunflowers (Russian Giant) into the test beds very late this year, in early August, after the Charlotte potatoes came out. The thinking was simple; sunflowers need lots of…

Biochar for water and gas filtration
Biochar is a sustainable form of carbon used to replace fossil fuel-derived Activated Carbons used in the following water and gas filtration applications
Wastewater filtration
Filtering excess fertiliser leachate and water run-off
…

Making a fantastic raised bed, container compost mix
This blog was updated in March 2023 to reflect latest information on the new SF40 biochar multi-purpose compost.
SoilFixer has been supplying Biochar and SF60 (Biochar Super Compost) for many years. Our biochar-humus-rich compost is added…