Carbon Gold Biochar Compost Rejuvenator bucket, 1L size, organic soil conditioner with natural ingredients for gardening, promotes plant growth.
Biochar compost rejuvenator in clear plastic container, Carbon Gold, natural ingredients, soil amendment, 1L size, organic gardening, promotes plant growth
Hands adding biochar compost rejuvenator to soil in a wicker-raised garden bed with flowering plants and product container visible
Person holding rich garden soil, organic compost, sustainable gardening, soil health, planting preparation, close-up of hands with fertile dirt outdoors.
Hand planting with trowel in soil, gardening tools, organic farming, spring garden, farmer transplanting plants, cultivation process, outdoor activity.

Carbon Gold

Biochar compost rejuvenator 1L

Sale price£10.50

10% OFF your first order when you subscribe to our newsletter

Do you have old "spent" compost that you don't know what to do with? Don't discard it, use it again! By adding this revolutionary compost rejuvenator which is filled with biochar and natural biology, you can put life back into your existing compost and continue to use it year after year, and help climate change at the same time. Biochar compost rejuvenator is an additive that promotes root development and is ideal if you want resilient and productive vegetables, fruit, flowers, and veggies.

Product Details

Product Details

What is biochar?

The earliest known use of biochar was by the Amazonians over 2,000 years ago. Biochar is a high-carbon form of charcoal that is produced by heating organic matter at extremely high temperatures and in the absence of oxygen, a process called "pyrolysis".

By using Carbon Gold biochar, you can bring a physical and permanent change to your soil. It improves structure, aeration, water-holding capacity, and nutrient retention, and provides a refuge for beneficial microbes, which we add to improve plant health.

It also locks away carbon permanently underground so it is beneficial for the environment as well as plants, veg and edibles!

In short, using Carbon Gold biochar is good for your garden and good for our planet!

Size: 1L

A 1L tub is enough to revitalise 70L of compost

Made In The Uk Made in the UK
Sustainable Sustainable
Carbon Gold logo in bold yellow font on a black background
About the brand
Carbon Gold

Founded in 2007, Carbon Gold’s mission is to help create a sustainable future for our planet by improving plant health and sequestering carbon. They’re committed to providing solutions that are good for the environment and good for business. Carbon Gold has a commitment to improving soil health, plant health and human health.

Product Details

Product Details



Carbon Gold's products are 100% free from peat and synthetic chemicals, Soil Association approved for organic growing, and Made in Britain certified. They work with conventional as well as organic growers around the world to improve crop yields and sequester carbon. By restoring soil health, we can help to mitigate climate change and provide people with access to healthy food.

Delivery & Returns

Delivery & Returns

Standard delivery

Every product page specifies if an item is dispatched directly by Eden Project or our selected brands.

For items dispatched directly by Eden Project UK standard delivery on all products is £4.75* and free delivery for orders over £50.

Many items dispatched directly by our brands qualify for free delivery*. 

The exact shipping rates will be calculated on checkout based on your selected products and delivery address.

*UK Mainland, some exceptions may occur. 

Packed seeds, not boxed (UK-only): £2.75

Unfortunately for a small number of postcodes in remote areas of mainland UK we cannot guarantee free delivery. As a charity we set our postage charges according to our courier and have to pass on any additional charges. If you are unsure if your postcode falls into one of these areas please phone our customer services: 01726 818891.

Affected postcodes & delivery charges are as follows:

  • PO30 - PO41 (Isle of Wight) = £16.95
  • AB31 - AB56, IV1 - IV9, HS - HS9, KA27 - KA28, KW1 - KW17, PA20 - PA78, PH1 - PH50, ZE - ZE3 = £17.95
  • BT - BT94, IM - IM9, TR21 - TR25 = £26.95
  • GY - GY9, JE - JE5 = £47.95

We can only send seeds and very large products to delivery addresses in mainland UK.

For deliveries outside of the UK please call our customer services team on 01726 818891.

Delivery times

Most products are dispatched within 1-3 working days of receiving the order. We'll let you know by email when your order has been dispatched.

After dispatching, your order will normally reach you within 1-3 working days. It may take a little longer in busy periods.

Why we dispatch some products directly from our suppliers

To reduce the products' carbon footprint and to offer you a wider selection of products, we have a number of brands/suppliers dispatching directly to you from their warehouses. 

Please see the "Delivery & Returns" tab on each product where we specify if a product is sent directly by Eden Project or from a supplier. 

    If you receive goods that do not match those that you ordered, please notify us within 14 days of receipt to return them. For all enquiries please call 01726 818891 or e-mail us:

    To be eligible for a return, items must be in its original packaging, in the same condition that you received your order, unworn or unused, with tags. This does not apply to faulty items.

    Items that were delivered directly from our suppliers will be returned to them. Once they receive the item(s) and verify their condition Eden Project will process a refund.

    Stock availability

    If for unforeseen reasons an item in your order is unavailable, we will contact you using the details you have given us to arrange an alternative product of similar quality or price. Naturally, if you choose to cancel the order, we will give you a full refund for the unavailable item.

    Packing of products

    We use recycled packaging where we can, and also re-use surplus boxes from here on site whenever possible. We always take care to ensure that the packages we send reach you in perfect condition and are a delight to open!

    How to return an item

    You can return an item within 14 days of receipt. As some of our products are dispatched directly by our brands, please contact us before returning any item(s) so we can provide you with the exact address on where to send them back.

    Unless an item is faulty, you're responsible for the postage charges to return the item.

    To be eligible for a return, your item must be in the same condition that you received it, unworn or unused, with tags, and in its original packaging. 

    If there were any shipping charges at the time of placing an order they will not be refunded unless the item is faulty.

    Made to order or personalised products are not refundable.

    Free UK standard delivery on all orders* over £50 for products dispatched directly by Eden Project (*Some exceptions apply). This product is dispatched by Eden Project within 1-3 working days with next day delivery as the standard delivery service, we aim to send all orders as soon as they’re placed.

    Geodesic domes with hexagonal pattern cladding at Eden Project, Cornwall, sustainable architecture, environmental conservation, botanical garden biodomes, eco-tourism attraction, futuristic structures, transparent biomes in landscape
    Get to know us
    About Eden Project

    We demonstrate and inspire positive action for the planet.

    We respect the natural world and demonstrate that people are part of ‒ not apart from ‒ nature. We protect wild places and enable them to thrive. We repair damaged spaces that need to be fixed.

    Shopping with Eden Project

    When you shop with us, you're supporting an educational charity and social enterprise. We look forward for you to join our global movement. Please learn more about us.

    Did you know we are a charity?

    We demonstrate and inspire positive action for the planet.

    Biomes structures at Eden Project, ecological architecture, geodesic domes, Cornwall, environmental conservation, sustainable tourism attraction, lush greenery.

    Membership Benefits

    Be part of something special by becoming a Member.

    Share great days out with unlimited free entry to Eden Project Cornwall for you and a family guest and save with our exclusive discounts and offers, all while supporting our charitable work.

    Related Collections