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Kitchen Waste Composter

This kitchen waste composter reduces the amount of rubbish we send to landfill and for incineration, and is good for the garden.

This kitchen waste composter has a nice name (Green Johanna) and provides a simple, easy to use compost system to compost degradable kitchen waste safely all year round, producing lots of lovely rich nutrients for your garden.

Kitchen waste that it loves includes; all your veg peelings and fresh fruit waste, cardboard egg cartons torn up, tea bags and coffee granules. Do not put in meat, fish, oil, cheese, eggs or processed foods.

Once the compost is ready at the bottom of the composter - usually around 12 to 18 months - you can open the bottom hatch and dig it out into a bucket and fork it into your garden beds or veg patch.

This product is only available for mainland UK delivery.

out of stock

Price: £120.00

Kitchen Waste Composter

The kitchen waste composter is a unique closed, hot composting container, designed in Sweden.

The composter provides good ventilation, is easy to empty, and is available with an insulating winter jacket which allows successful composting throughout the year.

It can compost two parts food waste to one part garden waste. All food waste including meat, fish and bones can be put into it.


  • 1 x Mixing stick
  • 4 x Outer rings
  • 1 x Lid
  • 1 x Base
  • 2 x Doors
  • 1 x Bag of fixing screws
  • 1 x Instruction manual

Top Tips

Kitchen waste composter design detail

The lid closes around the container’s ventilation system. The vents are holes with a diameter of 4.5 mm. Simply by turning the lid, even when it is locked, it is easy to regulate air circulation and the temperature depending on the season.

The cone-shaped design ensures that the compost does not stick to the sides and instead sinks down towards the centre. This enables air to circulate, oxygenating the compost.

Sliding doors on the front and rear make it easy for you to inspect the ongoing process and to remove the compost when it’s ready. The simplest way to remove the compost is to rake it out with the mixing stick.

The base plate

Enables good ventilation as well as allowing worms to enter. The holes in the base plate have a diameter of 4.5 mm, which means that mice and rats cannot penetrate the composter. Four inward-facing air vents lead in from the base plate, allowing air upwards into the container.

The round shape ensures there will be no cold corners and the heat is spread more evenly through the compost.

The mixing stick is an accessory which helps you aerate the compost effectively and is made of wood with two movable metal blades at one end. It is also an ideal tool for removing the final compost. Do not aerate deeper than 10-15 cm, otherwise you will disturb the ongoing process.


Kitchen waste composter helps you make a successful compost. You will find a detailed description of making compost in the handbook. 5 years warranty.

Start at the kitchen sink

Begin separating the glass, plastic and metal from the material which can be composted. Simply add another bin in your kitchen and separate waste that can be composted from that which can’t.

All food waste can be composted in your Green Johanna: vegetables, fruit, dairy products, bread, meat, bones, fish remains, soup and egg shells. Coffee filters containing coffee grounds, tea bags, household paper, egg cartons, and wilted flowers and pot plants can also be added to the compost. Grass clipping, leaves, twigs, weeds, bark, etc. can be composted too. We recommend cutting the waste into small pieces, giving the micro-organisms more surface area to work on, producing compost more quickly!

Where should I put it?

Stand the container on earth or grass in a shady corner of the garden, in as sheltered a location as possible.

Getting started

Cover the whole base plate with a looser layer of twigs and other coarse garden material to a depth of 10-20 cm. This should be covered with a layer of fine garden waste, followed by mature compost or soil. You can now begin to add your household waste. In the winter follow the same process, also adding one or two bucketfuls of compost from an ongoing composting process.


Mix and aerate the uppermost layer of the compost every time you add new material. This ensures the micro-organisms, which live and work in the compost, are able to do their job successfully. Once in a while you’ll need to aerate the compost deeper down.

When is it ready and how do you empty it out?

Depending on the conditions the compost will be ready after 4 to 6 months. It looks and feels like soil, smells good, is pleasant to the touch and crumbles readily. The easiest way to empty your Green Johanna is to remove the composted material through the two doors at the base. That way, you’ll only get mature compost, and you’ll avoid having to sort and start the process over again. It’s even better if you have two or more Johannas, as you’ll be able to let the compost in one mature fully while you continue adding to the other. Try to organise your composting process, so that you have some ready in time for Spring, when you need the nutrients for your plants.

Where to put the mature compost

The mature compost can be spread around trees, bushes and on vegetable patches all year round. The compost can be dug in, but if the mulch is not ready the decomposition process will continue and steal the oxygen from the plants. In the Autumn, however, half-ready compost is ideal for digging in to the earth. You can also let the compost lie and mature in a simple container or in a covered heap if you do not need it straight away.

There is no better compost than home-made compost.

No soil is as nutritious and of such high quality as that which comes from a hot compost and which contains both garden and household waste. The compost produced in Green Johanna is a rich nutrient supplement for your garden.

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