May 2008 Archives

Contact with the soil is a great antidote to the stresses of everyday life, writes John Cossham

This week in Community Care magazine I have a column about Britain's favourite hobby, gardening. An essential part of any garden is making compost, and this is my favourite pastime, so much so that my wife says I have 'OCD', Obsessive Composting Disorder'.  I've been obsessed by it and related subjects since childhood... I used to put food items in glass jars and watch the various bacteria and moulds develop over days and weeks, and I've always liked mushrooms and creepy crawlies.  Since coming out as a 'green' in my early 20's I've known that home composting is the best way to recycle all of the stuff which goes smelly in your dustbin, to save energy with reduced bin-lorry weight, to reduce landfill space, to reduce pollution from landfills, to help biodiversity by creating habitat and food, to help trap carbon in soils, to help fertilise soils to grow healthier plants, to reduce the need for peat which should stay in peat bogs, to reduce the need for fertilisers which use fossil fuels in their manufacture, to help reduce rainwater evapotation from soils and not need irrigation.... I could go on and frequently do.  I even did my dissertation on composting!

So, armed with all those reasons to have a home compost heap or wormery, here's my 'short guide'.  Good compost needs three things, the right mix of materials, the right amount of air and the right amount of moisture.  That's all.  Get those right and biodegredation WILL happen!  Biodegradable materials are any which have come from living things recently, any plant materials or animal materials and their products.  There are a few exceptions, including rubber which has been vulcanised with sulphur (tyres and inner tubes don't rot, although natural latex rubber like balloons and marigold gloves do, eventually) and some plastics made from oil now have an additive which allows them to 'oxo-biodegrade'.  Rotting is the natural breakdown of complex materials into simpler ones (water, carbon dioxide, humus) by the action of bacteria, fungi, and other organisms such as worms.  I find the whole process almost magical!

As home composting is so beneficial and saves the local authority lots of money in landfill charges, most councils are subsidising compost bins, many with WRAP as their partner, and this website also has a good section on composting, one of many guides available.  So get a cheap compost bin, or make an enclosure using pallets, or just have an untidy pile in one corner of your garden.  Throw on a mixture of green/sappy/moist/'nitrogen rich' materials and brown/dry/'carbon rich' materials and wait.  Rainwater will help keep it moist, the browns will help it keep aerated, and turning it over and mixing it will help speed the process.  Your compost is finished when the materials look nothing like what you put in... it ia a brown, crumbly soil-like material.  This can be 'top-dressed' on soil to suppress weeds and conserve moisture as a mulch, or riddled and used to add to potting composts; I mix it with leafmold and loam to grow my tomatoes and cucumbers.

Many websites and books advise on not composting cooked food, meat etc, but this is just because rodents find these foods even more delicious and may find their way into heaps containing them.  It is possible though to make your heap rodent proof, or to process these materials using Bokashi or a wormery so they can be recycled too. Search the web for many suppliers of composting products, or for designs for home-made versions.

 

Last week, researchers at the US National Oceanic and Atmospheric Administration (NOAA) announced that Carbon Dioxide levels had hit a new record high, of 387 parts per million (ppm), as measured by their research outpost in Mauna Loa, Hawaii.  This may not mean a lot to people less obsessed by CO2 levels than me, but it is significant, since the NOAA people say that the rate of accumulation is increasing, and is over 2ppm greater each year.  This is the highest CO2 concentration for 650,000 years, a level that humans have never experienced before.  This means that in just 6 or 7 years, the level will rise to 400ppm, a theoretical 'line in the sand' over which many scientists think that our climate will descend into chaos and become much more unpredictable and violent.

Last Thursday a tragedy happened. An 18 year old woman, Ruby M, was cycling along a cycle track where it is crossed by a service road to York Racecourse, and she somehow came into contact with a lorry. She was killed. I heard about this the following morning as she was the friend of a friend. This one person's death has brought so much sadness, so many questions, so many people with feelings of emptiness and loss.

Regular readers may know that I started York Rotters, which is a 'Master Composter Scheme', training volunteers in the art of home composting, and enabling them to go out into the community to spread the word, to help their peers to start composting or to learn how to compost more successfully. One of the activities we do to engage peoples' interest and to get young people involved is to participate in the World Worm Charming Championships, York Heat.