Compost is nature's gift to your garden, a rich blend of nutrients that not only nourishes your plants but serves as an ideal fertiliser , organic mulch , and soil improver . Making your own compost is both a rewarding and sustainable practice that allows you to recycle garden and kitchen waste to provide your plants with the essential elements they crave.Simply put your garden waste and some kitchen waste into a compost bin and it will break down over a year or so to reveal fresh, home-made compost.
If you're looking for a compost bin for your garden they come in a range of shapes, sizes, and prices. Whether you have a large country garden or a small outdoor space in the city, there are compost bins to suit all tastes and requirements. To help you choose between the hundreds available on the market we've tested several to provide a broad range of compost bins to inspire your next purchase.
We've also got some useful information regarding the different materials that compost bins can be made of, how to choose the best compost bin and what to put in your compost bin. If you're new to composting or would like more practical tips and information, see our guides on how to make compost and how to make a composting trench . We also have a handy trouble-shooting video on common problems with composting .
For tested tools to help with the process, check out our guides to the best spades , electric garden shredders , border forks , gloves, wheelbarrows and best cordless mowers . Best compost bins to buy at a glance: We tested the different types of compost bins, using them in the garden for a year to help you find the right one for your garden. Each bin has a detailed list of pros and cons for clarity and has been rated according to design, ease of use, compost quality and value for money.
Every bin in our round up below has scored a minimum of four out of five stars, so you can buy with confidence. Jump to: In every review, we award the outstanding products our coveted Best Buy award. To see these and the others we recommend, browse our pick of the best compost bins below: The best compost bins in 2024 Blackwall Green Compost Converter RRP: £42.
99 Our rating: 4.25/5 Available from Even Greener (£49.99) Pros Cons The Blackwall Compost Converter is a B BC Gardeners’ World Magazine Best Buy for the best budget model.
Made of recycled plastic, it consists of a one-piece cone-shaped body with a snug-fitting removable lid and single hatch. It's very quick to set up - just stand it on the soil and you're good to go. It's a great option for those who want a simple and affordable compost bin.
However, because of its thin sides, it was one of the slowest composters on test, so if you want results quickly you may want one of the other models featured here. Read the full Blackwall Compost Converter review . Buy Blackwall Compost Converter at Even Greener Suttons Modular Wooden Compost Bin RRP: £199.
99 Our rating: 4.5/5 Available from Suttons , Amazon (£179.99) , and organiccatalogue.
com (£199.99) Pros Cons This traditional wooden compost bin has a huge 573 litre capacity, earning it a BBC Gardeners' World Magazine Best Buy award for the best large compost bin. Made from sustainably sourced Scandinavian softwood, the planks easily slot into upright grooves on the corner posts and the bin can be accessed from every side.
Thanks to its plastic cover, it produces the highest internal temperature of any of the wooden bins on test, guaranteeing fantastic compost. However, you should note that this cover let in a little rain. Read the full Suttons Modular Wooden Compost Bin review .
Buy the Suttons Modular Wooden Compost Bin at Amazon and organiccatalogue.com Green Johanna 330 Litre Hot Composter RRP: £144.99 Our rating: 4.
5/5 Pros Cons Awarded a BBC Gardeners' World Magazine Best Buy for the most versatile compost bin, the Green Johanna 330-litre Hot Composter has a good capacity and works effectively for all types of food and garden waste. It does not need pre-mixing and is made from 100 per cent-recycled plastic. Read the full Green Johanna 330 Litre Hot Composter review Buy Green Johanna 330 Litre Hot Composter at Van Meuwen , Suttons , Amazon and Great Green Systems Hotbin Mk.
2 Composter RRP: £255 Our rating: 4.25/5 Pros Cons If you want quick compost, look no further - the Hotbin Mk. 2 Composter is a BBC Gardeners’ World Magazine Best Buy winner for being the fastest to compost.
A good option for small spaces, it has a built-in carbon filter to absorb smells, a temperature gauge on the lid and a tank in the base to collect the liquid produced during composting. That said, all waste needs mixing before going into this composter, and it can be a little tricky to access the compost. Read the full Hotbin Mk.
2 Composter review Buy Hotbin Mk. 2 Composter at Hotbin , Thompson & Morgan , Even Greener , and Dobies The best of the rest Although some models didn't quite achieve a Best Buy award, they still have various features that make them worth recommending. Browse our pick of the best of the rest on test.
Hozelock EasyMix 2-in-1 composter RRP: £134.99 Our rating: 4/5 Pros Cons This compost bin is a ‘tumbler’ type, designed to enable the frequent turning and mixing of waste material, and produces compost much faster than a traditional compost bin due to the high level of aeration. It’s smart and well made, from 90% recycled plastic, and its vermin-proof design enables the composting of both food and garden waste.
Thanks to its compact size of 60 x 50 x 65cm, it’s also easy to site almost anywhere. Both adding and emptying waste is straightforward, as the hatch is large and opens and locks smoothly with a chunky knob. There are also plenty of grip points to rotate the drum with relative ease, although once the tumbler is around two-thirds full, this becomes quite hard to do due to the weight.
One of its best features is that when the compost is ready, you simply roll the drum off the base to a convenient emptying place in the garden. The nutrient-rich liquid that drains during the composting process is also collected in a tank which clips onto a garden hose, allowing this useful plant tonic to be easily dispensed when watering. However, while this bin is clearly solidly made and the product of a carefully thought-out design, there are drawbacks.
The cost is high in comparison to the amount of waste it can process and the subsequent amount of compost produced. Another, is that it needs ‘tending’ to tumble the waste: not in itself an arduous task, but to produce compost rapidly this does need regular attention, ideally daily. The air vents do allow small flies to enter, and during warm weather, these fly out in clouds when the hatch is first opened, so opening it and standing back for a minute is advisable.
Any garden waste such as stems and woody material aren’t suitable to use in this compost bin, if the aim is to produce compost in a period of weeks. However, the chief drawback is that this can’t be the only composting solution because the waste needs to be left for a period of a month or so without adding fresh material. This therefore necessitate either having two of these composters, or an alternative composting solution.
It comes with a three-year warranty. Buy the Hozelock EasyMix 2-in-1 composter from Keen Gardener , B & Q , Wickes and Amazon Lacewing Easy-Load Wooden Compost Bin RRP: £84.99 Our rating: 4/5 Available from Primrose Pros Cons The simple construction of this wooden compost bin allows for a whopping 718 litres of volume.
It's made from slats to allow air circulation around the compost and the front ones are removable, making filling up the bin much easier and allowing lots of room to get at the compost when it’s ready. However, we found that these wide gaps meant that it composts relatively slowly. Made from pressure treated pine, the slats have a smooth, planed finish and are guaranteed against rot for 15 years.
Buy Lacewing Easy-Load Wooden Compost Bin from Primrose Harrod Horticultural Slot and Slide Wooden Compost Bin RRP: from £199 Our rating: 4/5 Available from Harrod Horticultural Pros Cons Producing some of the best and fastest compost on test, this composter is for serious gardeners. It's designed to be modular, so you can add multiple units for extra capacity, and is very sturdy as it's made of sustainably sourced wood with aluminium fittings. The planks slide out smoothly so it's easy to add waste and remove compost.
However, the lid isn't included, and this composter needs a lot of assembly with power tools, so if DIY isn't your bag you may want to look elsewhere. Buy the Harrod Horticultural Slot and Slide Wooden Compost Bin from Harrod Horticultural Garantia 400 Litre Thermo-King Composter RRP: £94.99 Our rating: 3.
75/5 Pros Cons This plastic compost bin has a great 400-litre capacity. On test, its foamed plastic walls and carefully designed ventilation system helped it handle this volume quickly, producing excellent compost. It's made from 100% recycled materials and includes a wide two-part hinged hatch for easy filling.
However, it's a little tricky to assemble. Buy the 400 Litre Thermo-King Composter at Robert Dyas , Crocus and Garden Tech Thermo Compost Bin Komp 420 RRP: £208.88 Our rating: 3.
75/5 Available from Amazon and Garden Delights Pros Cons With a robust, sectional design and made from thick recycled plastic, this bin is easy to access thanks to a wide hinged lid. Insulated and vented sides help it compost quickly and it's available in a range of sizes, from 250L to 700L (pictured). However, we found that it's fiddly to assemble without help, and it comes at a relatively high price.
Buy the Thermo Compost Bin Komp 420 on Amazon and Garden Delights Aerobin 200L Composter RRP: £191.99 Our rating: 3.75/5 Pros Cons Our tester liked this this high-tech compost bin, which thanks to its internal ‘lung’ to circulate air and a rigid recycled plastic outer shell produces compost quickly.
It's easy to access, but the bin needs a regular supply of ready-mixed waste to maintain temperature, as well as a drainage hose, which isn't supplied. The leachate tank is also tricky to access. Buy the Aerobin 200L Composter from Amazon and Water Butts Direct Forest Garden Beehive Composter 250L RRP: £189.
99 Our rating: 3.5/5 Pros Cons This attractive wooden, beehive-style compost bin makes a stylish feature in the garden. Made from FSC pressure treated softwood it arrives flat packed and took our tester a lengthy two hours to slot together and build.
It has a hinged lid and a hatch at the base for accessing the compost, and tools including a drill and screwdriver are needed to attach both of these. The bin holds 250 litres of compost, although this is more like 230 litres when you allow for a gap at the top for air circulation, and it’s easy to add material, as long as you’re strong enough to lift the lid with one hand. Our tester fashioned their own prop to hold the heavy lid up while they worked and it’s a shame that given the price, one isn’t included with the bin as it makes a massive difference to ease of use.
It’s also awkward to harvest compost from the hatch as material needs regularly turning and so you end up turning and using the compost at the top. The quality of compost was as you would expect with a cold composting system of this size and it took 18 months before we had a good crumbly mix. The bin is well aerated and the secure lid prevents compost getting soggy from the rain.
The bin is also open at the bottom so it’s ideal for placing directly on the soil but this does mean that rodents can burrow up into the compost. The bin feels very durable once built and it comes with a 15-year anti-rot warranty, which as the wood is in direct contact with the damp ground is reassuring. The build quality and looks of this bin and are its best features but it’s not for gardeners who lack strength or don’t want to spend time putting it together.
What materials are compost bins made of? Compost bins come in a variety of shapes and sizes, and are made using different materials: You can also make your own compost bin using wooden pallets or corrugated iron. Enclosing the sides will retain heat, which speeds up the rotting process – the larger the pile, the more heat. The ideal minimum size is 1m x 1m and, if possible, make more than one, so it's easier to turn the compost.
For more help, take a look at our advice on how to build a compost bin and our guides to the best multi-tools , best cordless drills and best hammers , should you attempt to build your own. How to choose the best compost bin When choosing a compost bin, consider the size of your plot, the design of your garden and the amount of compost you'd like to produce. Where will it go? Location is likely to influence your choice of bin.
A site in full or part shade is best for successful composting. Most bins need to be placed on soil to achieve good drainage and boost microbial action, but the Aerobin and Hotbin must be on a level hard surface. If you want a cheaper compost bin but only have hard surfaces, look for a model with the option of a base plate to create good drainage and aeration.
Which design is best? If you only want or have room for a single bin, choose a design where finished compost can be easily harvested from the bottom so you can keep filling from the top. This applies to all the plastic composters in our trial. How fast is compost produced compared to the work involved? Composting in traditional (non-insulated) bins takes 6-12 months on a ‘fill and forget’ approach.
You can speed up the process by emptying out, turning and refilling to incorporate air and up the temperature, but obviously this takes time and effort. Easiest is two bins so one rots while the other fills. A lid or cover will help retain heat and moisture, and keep out excess rainfall, so cover open bins with a piece of plastic or old carpet.
Material and thickness also influence compost speed by retaining more heat. Wood is a good insulator while thin plastic has the poorest qualities. Highly insulated or ‘hot’ composters are most expensive but do have the potential to make compost in just a few weeks as the composting process is faster at higher temperatures.
This type of bin suits a ‘little and often’ mode of filling: note the Aerobin and Hotbin require a weekly supply of pre-mixed waste to work at their most effective. What do you get for the money? Consider the length of warranty, particularly with wooden bins and the eco-credentials of the bin, which can vary – some are made from FSC wood or totally from 100% recycled plastic while others contain none. What to put in a compost bin Most garden material is compost-able, including grass clippings, annual weeds, leaves of perennial ones (not roots, they’ll keep growing) and soft prunings.
This ‘green’ material, as it’s often called, would become airless and soggy on its own, so for effective composting, mix with around the same amount by volume of ‘browns’ like chopped-up woody stems, brown cardboard and non-shiny paper. Raw vegetable scraps, teabags, coffee grounds and cut flowers can go in any type of bin, but cooked food, meat and fish must only go in an enclosed vermin-proof design. How we tested compost bins The bins were assembled and sited according to instructions, and then tested over a year.
They were given the required type of waste and similar bins were given the same mix of waste at the same time. They were assessed throughout the year using the following criteria with equal marks attributed to each: For more information in our testing process, take a look at how we review . This Review roundup was last updated in December 2024.
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The best compost bins in 2024
Find out which compost bins came out on top in our review, and the differences between each type.