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8 January 2010
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Autumn 2001
 
   
 

Composting with worms

 


Now for something different! Have you ever-considered worm composting? I popped onto the stand of Wiggly Wigglers and received some enthusiastic advice from David Pitman. David Pitman shows  how worms can turn kitchen waste into compost


Did you know?

In the next 12 months an average kitchen will produce somewhere in the region of 200 kilos of organic waste. The average garden will produce very much more.

What to compost

Where to compost

Why worms?

What sort of worm?

Why should I compost?
Organic waste is in reality a valuable raw material that can be turned into a prime quality compost.
Composting is the best way to deal with organic waste. It returns valuable organic matter to the place it does the most good, the soil, in the form, which it is best able to handle, compost.
Compost, as all gardeners know, brings fertility to the earth—it improves structure, holds water yet improves drainage, breaks up clays yet binds sands; it is one of the essential building blocks of good soil.
Some 30% of all household waste is organic and can be recycled. If you just ‘throw away’ this waste you are adding to the millions of tonnes per year that is simply left to rot in landfill—and paying your council for the privilege of transporting too.
As this organic waste decomposes its potential value is lost forever—whilst pollutants escape into the air and seep into the water. Back to top

What should I compost?
Anything that has lived and died can be composted, including kitchen waste such as vegetable peelings, cooked food, garden waste such as lawn clippings, animal waste such as horse manure, even dust from your vacuum and packaging waste such as cardboard! Back to top

Where should I compost?
Different places for different wastes. An efficient wormeries by the kitchen door will take care of the household waste while a conventional outdoor compost heap will handle the garden waste.
The outdoor heap can also be enriched with composting worms to turbo-charge its performance. Back to top

Why should I compost with worms?
Worms compost quickly - in fact they are the fastest natural composters by far and can eat half their own body weight in waste everyday.
Worms can compost very effectively in a very small space (even indoors).
Worms stop smells - they compost the waste as you add it and this prevents odours from building.
Worm casts are the "black gold" of compost. They make a high quality fertiliser which is rich, dark, friable and pleasant to handle.
Worms reduce the volume of your waste. In fact 8 bins of waste will probably be reduced to 1 bin of compost (and lots of liquid feed).
Worms are safe, hygienic and completely natural.
Worm composting produces two valuable products - the compost itself and a liquid feed which can be used all over your garden and houseplants.
Worms can compost types of waste not normally used, such as cooked leftovers, wood shavings, paper, dog hair and eggshells. (in the past elephant dung has even been composted!)
Back to top


What sort of worms do I need to compost?
There are many different types of animals with the name worms, such as flatworms and mealworms, but all the useful composting and garden worms are earthworms, which are members of the phylum Annelida.
There are more than 2000 species of earthworms worldwide but, thankfully, you don’t need them all! You will need several different earthworm species for various applications but the find the best for composting organic waste are ‘dendras’ (Dendrabaena veneta) and ‘reds’ (Eisenia andreii).
Around the world these composting worms are also referred to as tiger worms, brandlings, wigglers or surface litter worms.
The same composting worm species, reds and dendras, are equally at home composting both kitchen waste and garden waste. The other earthworm species available the familiar garden worm Lumbricus terrestris, familiarly known as the ‘lob’ worm.
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Who else is using worms for composting?
The world! Worms are used to help compost all sorts of waste in all sorts of locations. In rural India worms are used in composting toilets, making them much more hygenic. In Australia 4% of households are already worm composting their kitchen waste at home. Back to top

 

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