As the temperature outside plummets so the compost in your bin might cool down, but by maintaining good composting techniques you can keep your compost ‘cooking’ even in the coldest winter periods.
In the case of the Green Johanna, adding the insulating jacket also helps.
The Johanna pictured below in January in Leeds kept its compost warm at 40 degrees Celsius while the ground temperature was at zero.
This particular Johanna received all food waste from a family of four, rising to 10 people over the Christmas period. Carbon sources include stored shredded leaves from several trees in the vicinity, as well as Christmas paper waste such as cardboard packaging, compostable wrapping paper and Christmas cards.
The Great Green Systems team tend to keep the jackets on our Green Johannas for most of the year, not just in winter, as we’re based in the chilly north of England.
Don’t worry that using the jacket will make the Johanna too hot for worms, as one customer suggested. This is not a problem because worms can easily enter and leave the composter through the small holes in the base plate. At temperatures approaching 30 degrees Celsius they will move where it is cooler, usually the bottom of the bin where the compost is maturing, or they can leave the bin entirely.
The jacket is made from foamed polyethylene – a lightweight, water-resistant material that is tough but flexible and designed to fit snugly to prevent cold air from circulating round the Johanna. It’s made for Great Green Systems by a specialist foam manufacturer in Northamptonshire.
When fitting the jacket, it’s important to ensure that the bottom section doesn’t cover the vents at the sides of the Johanna’s base as these are necessary for airflow.
The jacket should be installed with the two upper sections pulled down so they overlap the section underneath by about 5 cm. Doing this means the ventilation holes are left clear.
Also check throughout autumn and winter that the vents at the bottom of the Johanna are not blocked by leaves or debris or snow. Air is taken in at ground level so keep this area clear so that air can enter freely.
The jacket can easily be removed if the compost gets too hot (above 70 degrees C) in warm weather. Compost thermometers, which have a stem to reach down into the compost, are a useful aid.
TIP: Give the bin’s contents a boost by adding beneficial bacteria in bokashi bran or a layer of soil or mature compost. You can also add coffee grounds or chicken manure to add a hit of nitrogen to your mix.
Johanna planner for winter:
In freezing weather limit ventilation through the Green Johanna lid’s ventilation system – twist the lid towards the minimum setting.
Wood chips are a great addition, creating airflow and adding plenty of fungi to the bin.
Keep adding to the bin – ideally about three times a week – to maintain the composting process. The Johanna’s generous 330 litre capacity means the compost mass acts as an insulating factor.
Chop items up. Smaller items provide a larger surface area for more microbes to work on.
Aerate regularly – about twice a week – to ensure the aerobic microbes breaking down the waste get enough air. Without air, the contents will turn anaerobic and start to smell.
Check moisture levels – by doing the squeeze test; grab handfuls of the bin’s contents and squeeze. One or two drops of liquid should appear. The ideal consistency is like a wrung-out bath sponge.
There can’t be anywhere on earth putting Green Johannas to better use than the townships of South Africa.
The food waste composters are a vital tool there in the work done by local women to sustain their families, communities and the environment.
The women, known locally as Kamammas (‘mothers who carry their child and community’), use the Johannas to recycle food waste into compost to grow their own food. They then use this produce to cook traditional homemade cuisine for tourists who stay in their guest houses, providing a true taste of the real South Africa.
A Kamamma and Johanna
These ‘Homestay’ experiences are organised through the Dreamcatcher South Africa Foundation, a non-profit social enterprise which gives communities, especially women and youth, the opportunity to raise themselves out of poverty through training and employment.
Township residents are trained as hosts, guides and small business owners, enabling them to introduce tourists to the culture of their country.
Dreamcatcher’s founder Anthea Rossouw remembers the Kamammas’ reactions when she first showed them how they could learn to compost using a Green Johanna (shown in the video below).
‘Their reaction was amazing. Such joy, because they could see what this meant for them – to be able to grow their own food. They started singing – ‘Give Me Hope Jo’Anna’ and dancing round the compost bin!’
Dreamcatcher’s recycling work is now even more important since the South African government has committed to halving food loss and food waste by 2030. In recent months Anthea and her team have been running workshops to get more people recycling their food waste with Green Johannas.
A lorry load of Green Johannas destined for South Africa
The idea for Dreamcatcher came to Anthea more than 30 years ago during the apartheid era when she knew she had to do something about the suffering she saw around her.
‘There was so much injustice, inequality and insanity on a human level and an environmental level,’ she says. ‘It was obvious it couldn’t continue.’
Raised in South Africa by parents who championed diversity in defiance of the apartheid system, Anthea believes in turning challenges into opportunities.
Her father, a master builder of English descent, used to tell her, ‘Forget the pie in the sky and get down to earth.’ He could never have imagined how literally his daughter would take that advice, as getting people composting is one of the many strands of her vision for a better world.
Over the years she has run many composting workshops, both in South Africa and the South of England where she divides her time. She reckons that 99 per cent of the people she talks to have never composted before, but before long they are as evangelical about it as she is.
‘Composting is all upsides – you’re taking food waste out of landfill, where it’s an environmental disaster, and out of homes, with all the health and hygiene issues that involves. And it creates free, organic compost for people to grow their own food and flowers.’
When starting Dreamcatcher, she felt that an answer to many of the problems faced by townships could be found in a new kind of tourism. The tourism industry at the time was booming but completely bypassed the townships, with tourists being driven straight past the communities as though they didn’t exist. She saw a way for the inhabitants to share a piece of the tourism pie by offering visitors the chance to ‘life-see’ as well as sight-see.
A Kamamma gives tourists an authentic taste of South Africa
Anthea’s first proposals centred on the community of Melkhoutfontein, Western Cape, which at the time was one of the most destitute areas in the country, situated between two rubbish dumps and surrounded by waste.
The response from the authorities was ridicule. ‘The attitude was, “But no one will want to go there, no one will want to eat there!” ‘
But Anthea connected with the international marketplace, convinced that tourists would relish the chance to meet the people (as well as the elephants!) of South Africa, thereby getting to know the soul of the country, not just its beauty spots. And she was proved right. Since its inception, Dreamcatcher has facilitated trips to South Africa for hundreds of tourists from over 30 countries.
Dreamcatcher developed authentic tourism experiences led by local people. It is based in the region that boasts the earliest known examples of human artistic activity, in the 73,000-year-old drawings discovered in the 1990s at Blombos Cave.
Homestay with Kamamma
Focusing on struggling areas situated within established tourist routes, Dreamcatcher gives people the skills and knowledge they need to support themselves. Then, armed with these new skills, they develop enterprises such as ‘Homestay With Kamamma’ and ‘Cook-up With Kamamma’ and they go on to mentor others in the community
Educational programmes help to transform children’s lives, breaking the cycle of poverty. A good example of this transformation is one Kamamma who has three children – one is now a trained chef, one is training to become a teacher, the other to become a doctor.
Anthea knew that tackling waste was essential to Dreamcatcher’s tourism aspirations. So she set up a waste education scheme called ‘Waste – it’s Mine, it’s Yours’ in collaboration with the University of Brighton. She describes the waste problem in South Africa as a legacy of apartheid, when the dumping of waste was a way of expressing opposition to the system, as well as a protest against the lack of infrastructure caused by the forced removal of citizens. Moreover, in many communities the inadequate infrastructure led to waste being openly burned in the community or at dumpsites. Over time, waste and litter became a way of life, so training was invaluable in introducing the best ways to manage waste. An environmental ethos soon followed with local people taking pride in their role as custodians of their environment. And what a stunning environment it is!
Rubbish as a resource
Waste is no longer seen as rubbish but a resource. Dreamcatcher has created a thriving crafting industry, with tuition provided by visiting artists, so that young people can intercept waste that might end up on the beautiful beaches and in the ocean and turn it into craft products to sell to visitors. Plastic films are turned into bowls depicting the rich cultural heritage of the area, porcelain pieces incorporated into tiles to embed in walls and old jeans and waste textiles are transformed into bags and backpacks.
Anthea is understandably proud when describing how mass-produced items that are deemed worthless can be given value thanks to the skill of a local craftsperson.
The University of Brighton partners with the Dreamcatcher community. With the help of visiting volunteers and artists, local people have transformed the sides of buildings with brightly coloured paintings that tell the stories of their ancestors – bushmen and women with a rich history and many diverse cultures.
A volunteer takes compost from a Johanna
So how did Green Johannas come to play a part in this story?
Anthea first worked with Green Johannas through a community composting project she started when she was living in West Sussex in England in 2008. She took the same method of training back to South Africa, where she knew it would be transformative.
She believes the fact that the Kamammas were already producing their own food meant they were protected from some of the hardship caused by the Covid pandemic.
Inspired by a Nelson Mandela quote – ‘Something is only impossible until it’s done’ – Anthea says she is excited to see what can be achieved over the next few years.
A daily source of inspiration are the Kamammas themselves.
‘When I first met them I was overwhelmed by their warmth and generosity,’ says Anthea. ‘Each woman brought something from the little she had to make me welcome.
‘These are women who were rejected by their own culture, who had to struggle to raise their children but succeeded in sending them to university. They are survivors every day of their lives. They’ve gone from being servants to service providers.’
Great Green Systems couldn’t be prouder to be part of the Kamammas’ inspiring journey.
Locals learn how to use the Johanna with Anthea, right.
My parents and I were discussing the fact that their local council doesn’t yet operate a separate food waste collection.
My mum said it wasn’t a huge deal for them because they didn’t have any food waste anyway.
I queried this; they must have food waste. She maintained that they didn’t.
I said I wondered if they ate eggshell sandwiches, or tea bag pie, or perhaps apple core crumble. She said she wondered if I was being sarcastic.
Of course, they didn’t eat those things, she said, but that wasn’t waste ‘because you couldn’t eat it anyway’. It became clear that the word ‘waste’ meant different things to each of us.
‘Our generation sees waste as something you scrape off your plate,’ Mum said. ‘So it’s the result of not planning properly and cooking too much or putting too much on your plate.’
My parents’ generation of ‘war babies’ equate the word waste with wastefulness.
Wasting food
This might go some way towards explaining the confusion that arose some years ago when research was being done to establish what residents’ attitudes would be if their local council offered voluntary food waste collections. Researchers found that many people said they wouldn’t use a food waste collection because they had no food waste. This didn’t stack up as it didn’t equate to the amount of food waste that the councils had to dispose of. Perhaps these respondents were people of my parents’ generation who thought that if they weren’t ‘wasting’ food they had no food waste.
After our discussion, Mum started thinking about everything she threw in the bin. She realised that she created large amounts of peelings because she makes fresh soup every day.
The next time I visited, she said that because they didn’t yet have any information about when their council would start food waste collections, it had been preying on her mind that every scrap in their bin went to landfill.
But they also felt ‘too old at our age’ (81 and 84) to start stirring compost.
Starting with the belief that you’re never too old to save the earth, I came up with a solution – Team Bokashi. It would work like this:
A Maze Bokashi Bin would fit neatly on their worktop, or under the sink, and they could scrape all their food waste into it.
By adding Bokashi spray or Bokashi bran to each input of food waste, natural beneficial microbes are introduced which accelerate the fermentation process. (Bokashi is Japanese for ‘fermented organic matter’).
Because the waste ferments anaerobically (without air), there are no flies or smells.
Once the bin is full, it is left sealed shut for two to three weeks while the contents are left to ferment. Then the contents would normally be added to a garden composter, where it acts as an accelerator, or buried in the garden to break down and become soil-building compost. But I don’t see my dad at 84 being keen to go round digging holes in his garden, so I said I would take the bin and add its contents to our own Green Johanna or Compost Tumbler and hand it back to them. Using two bins on rotation should do the job.
In a way, it’s our own version of what the ShareWaste app does – connecting people who would like to recycle their food scraps with other people who are already composting.
My dad came on board when I explained that the liquid you drain every few days from the tap at the bottom of the bin is a great organic drain cleaner that controls smells and prevents algae build-up. You can also dilute it for use as plant feed, but it looked like the plants would have to go hungry. My dad has always had a thing about blocked drains. I think it’s a man thing. Using the bokashi drain cleaner might save them a small fortune on whatever gunk he normally chucks down the plughole, and it wouldn’t be a bad thing for the water system too.
I gave them the Bokashi bin and left them to it. Would they become bokashi fans or might it be too much change too soon?
At first Mum argued that there was no space on the kitchen worktop (what with her soup maker, bread maker, food processor etc) for the bokashi bucket so it was given a home on the patio table outside. After a few weeks, however, she didrearrange her worktop space to accommodate the Bokashi bin and the sky didn’t fall in.
No blocked drains
Dad expressed disappointment that he wasn’t getting the promised Bokashi drain cleaner. I explained it was quite normal to go a week at first without liquid while the process got going. Then he forgot to check for a few days and ended up with half a jugful of the stuff. He was highly delighted. I could tell no drains were going to get the chance to get blocked around these parts.
My parents reported that after a few early instances of forgetting they had a new food waste bin, they quickly got the Bokashi habit. It was now unthinkable for them to throw food waste in the normal kitchen bin, as they had done for the past 80 years.
Bokashi convert
Mum is now a complete Bokashi convert. She says she feels ‘empowered’ by being useful.
‘We all have to do something about the climate crisis,’ she says, ‘and this isn’t a lot to ask, especially when you consider the upsides.’
All that remained was to take a photo using Mum as a model for this blog, showing ‘People in their eighties getting the Bokashi bug’.
But when I turned up to take her photo, Mum had just been out and was looking very elegantly groomed – and not a day over 60.
I was dismayed. ‘You’re going to ruin my photo, you don’t look old.’
‘Really?’ she said, delighted. ‘You’d better use your dad then.’
Julie
Dad does his bit – using a Bokashi bin
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