Water is the greatest enemy of the worm farm as flooding will cause them to drown.
If you have visited the Netherlands you may have heard the expression, water is Holland’s greatest enemy; that is because 60% of the country lies below sea-level. It is also its best friend; they have become the world’s experts in the management of the oceans and dams. You will not find raw sewerage flowing into and polluting their rivers and lakes.
Water is also a great threat to a worm-farm. If it is flooded with rain, they will drown and the contents of your compost bin will start to rot anaerobically; it will begin to stink. Since most of waste food that you feed them on is largely water, you rarely have to be concerned about desiccation. The rule of thumb is to take a handful of the vermi-compost and squeeze it in your fist; nothing should drip out, but it should be damp.
If you have worm-farms like mine where rain can leak in, then it is very important to cover them properly with a waterproofing material, which should be weighted down against the wind.
You can pay a lot of money for a worm farm, but really a cheap 25 litre bucket with a lid is all you need. Drill holes in the bottom for the vermi-liquid to drip out, and place it in warm spot but not in full sun.
Rest it either on two bricks, or on a strong builders’ 5 litre bucket to collect the wee. The lid must be kept loose as they must breathe; they need oxygen. Periodically gently loosen the material with a garden fork, but do not turn it over, to let air down to the bottom.
First place about 5cm of well rotted compost at the bottom of the bucket, and then your kitchen waste. Finally add 50 or more worms from a friend and, hey-presto you are in business. Cover them with another thin layer of compost or whole cabbage leaves. They will double in number every month.,
It’s a good idea to have two or more such buckets. Once the first is full, start the second using the compost from the first with a few worms at the bottom, and another layer at the top. They will go in search of food. A tablespoon of wood ash is a good idea. Avoid cooked food but a dead rat or bird from the garden is fine, but no dairy and very little bread. Well rotted cow or horse manure is excellent, but not chicken litter.
Water is the greatest enemy of the worm farm and and excessive liquid must be kept out with an effective sheet of proofing of some material or other, preferably biodegradable; plastic that has already been used once and is being discarded may be suitable.
Whole fruit and veg like an apple or potato need to be cut in half; the skin has been designed to keep both oxygen and worms out, and humification takes much longer.
Then, after about a month tip the whole bucket into your compost heap, retaining a few handfuls of worms so you can start again. Cover the mass with a layer of grass cuttings, or leaves to keep the sun off. The wrigglies will spread through the pile speeding up the process and enriching all of your compost with their droppings; that’s where the real value is. Watch out for the hadedas; they will soon sniff out a good meal.
For more interesting reading about rich compost, enjoy this page called define humus. It is not what I thought and perhaps will surprise you too.
Conducting your own rainbow worm farm experiments is not that onerous. You really should keep records though and photographs will help provide evidence that a crop responds better to the use of the leachate.
The worm wizzard is a good source of domestic wormeries in South Africa.
So, water is the greatest enemy of the worm farm; by hook or by crook, keep it out.
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