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Carbon Gold is a biochar company based in Bristol, UK
Carbon Gold produces a range of biochar-based soil products. The company also advises on the creation and implementation of biochar production systems.
Carbon Gold was founded in 2007 by Craig Sams who is co-founder of Green & Blacks chocolate and a range of other successful ethical enterprises including popular health food brand Whole Earth and Judges Bakery in Hastings where he lives.
At Carbon Gold our mission is to get as much biochar in the ground as possible for both the health of our climate and health of our soils.
Carbon Gold’s products can be used by anyone with an interest in improving the health and fertility of their soil.
According to the various needs of our customers, the products are sold in a range of sizes from easy to carry bags, buckets and tubes to bulk bags for professional growers or those with large growing areas.
Our range comprises of six products, all manufactured here in the UK. They combine the traditional benefits of biochar with the latest in sustainable soil science:
To buy the range online please click here.
In short, biochar improves soil structure, encourages beneficial fungi and bacteria and enhances nutrient retention:
The Soil Improver is a versatile product. Here are a few ways it can be used:
To read more about how to use the GroChar Soil Improver please click here.
To watch Alys Fowler demonstrating how to use it please click here.
GroChar Fertiliser is in an easy to use, all-natural pelleted form and delivers superb results without any chemical additives. It is ideal for sprinkling around flowers, vegetables, fruits, shrubs, borders, and houseplants and adding a generous handful or two to boost pots & containers, hanging baskets & window boxes. It is packed with optimum amounts of nitrogen for overall growth and green leaves; phosphate to support healthy root growth; and potash for abundant flowering and fruiting. The addition of biochar helps keep nutrients in the top level of soil, making them readily available to plants.
To read more about how to use the GroChar Fertiliser please click here.
Use it for general indoor and outdoor use in containers, hanging baskets, potting on and planting directly into garden soil.
Use it to get your seeds off to a strong start.
In short, you can use our all-purpose and seed composts just like you would any other composts. The only difference is that, due to the unique water-holding properties of coir and biochar, you have to water less often.
To read more about how to use the GroChar Compost please click here.
Coir is made from coconut husks. The coir used by Carbon Gold is organically certified by the Soil Association.
To view all product details including prices, please see our shop.
Biochar is a form of charcoal that has been used for millennia to improve soil nutrition and growing conditions. It can be made from any woody biomass that has been charred at a low temperature with a restricted supply of oxygen, a process called pyrolysis. As well as being a useful soil amendment, biochar can reduce atmospheric concentrations of carbon dioxide when buried in the ground.
Biochar is made at lower temperatures than charcoal, which results in a higher carbon content. It doesn’t need to be made from hardwoods, as barbeque charcoal does, and can be used in much smaller pieces or powder – known as ‘fines’ – rather than lumps.
Knowledge of biochar and the benefits of adding it to soil have been around for millennia. Studies of soil at sites throughout the Amazon Basin suggest that ancient Amazonian civilisations made a primitive type of biochar and added it to their soils to help grow their food. The result was a rich and fertile black earth – or ‘terra preta’ – with a high carbon content, which is still evident today.
Biochar is not commonplace in British horticulture but it has been a by-product of traditional woodland management in the UK for many years, along with charcoal making.
Defra set up the Sustainable Growing Media Task Force in 2011 to help them in their effort to reduce the use of peat in both professional horticulture and amateur gardening. The task force put together their recommendations in July 2012 and as a result the government announced a number of measures in January 2013 that they would take to support the recommendations. This included £1-million toward research into alternatives to peat. Biochar is one of the amendments to growing media being considered as an alternative to peat.
Photosynthesis puts carbon from the atmosphere into biomass. That carbon returns to the air when the biomass rots or burns, but much of it can be permanently stored as biochar in the ground. Biochar is a very stable form of carbon. It also reduces soil emissions of nitrous oxide, a greenhouse gas 300 times more damaging than carbon dioxide. It is not a silver bullet but it represents a powerful tool to help reverse the process causing climate change.
Friends of the Earth published a report called ‘Negatonnes’ (Sept 2011) in which they recognise the importance of biochar as a carbon dioxide reducer. Chris Goodall, author of ‘Ten Technologies to Save the Planet’, recommends biochar as a useful and important way to help reduce atmospheric concentrations of carbon dioxide. Goodall is supported by James Lovelock, originator of the Gaia theory, who said: “There is one way we could save ourselves and that is through the massive burial of charcoal. It would mean farmers turning all their agricultural waste – which contains carbon that the plants have spent the summer sequestering – into non-biodegradable charcoal, and burying it in the soil. Then you can start shifting really hefty quantities of carbon out of the system and pull the carbon dioxide down quite fast.”
Biochar can play an important part in the battle against climate change but it cannot be expected to compensate for increasing emission levels. It is vital that everybody plays a part in reducing energy consumption.
It varies according to production methods, but is typically between 70% and 90% carbon.
We source as much of our biochar as possible from UK-based producers. However UK-sourced biochar is in short supply so the remainder of what we need for our products comes from outside the UK. All our biochar is sustainably sourced and certified for use in organic growing systems.
Carbon is chemically stable, it does not react readily with water or atmospheric oxygen, and so once in the soil it tends to remain there. The carbon in ‘terra preta’ soils has been subject to some of the highest rainfall on earth and it is still present after 4000 years.