You don't need them, they just make compost by eating all your food scraps for you. They also give you good fertilizer for your garden.
Here is a list of the scraps that they eat
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Worm farm offer is more eco frindly way to dispose of food matter rather than throwing it in to land fill which causes more green house gas
The worms most suitable for worm farms are usually red worms (also known as red wrigglers or manure worms), blue worms or tiger worms. Do not use nightcrawlers or earthworms when worm farming.
It depends on what you want to use the worms for. For fishing-nightcrawlers are good. For composting-red wigglers work best. For gardening-earthworms will aerate the soil very well.
Dendrobaena worms are found in a wormery. They are the type of worms that help to make compost for gardens and growing vegetables. They are also good for plants and other shrubs.
it fertilizes the soil
Jonathan David Young
The tiger worm is a small reddish worm that is excellent in worm farms and compost heaps. It is the Eisenia fetida and it gets its "tiger worm" name because of the rings on its body.
A lot of people, especially gardeners and organic people, have worm farms because it makes the soil nurtritious from the worms stool. Which is great for garderners, because it is like organic fertilizer for their plants!
They were a big thing in the 1970s, but not sure how the economics worked out on that.
There are many advantages to worm farming. Worm farming helps to cut down on global warming, and the farms create an excellent liquid fertilizer for crops.
Worm farms are beneficial both to the farm owner and to the planet. You make nutritional soil to use and that soil helps the planet by being nutritional.
First you need an container that lets air get through but still has a lid, then you put the soil in. Afterwards you put the worms in and finally compost and food scraps. Trust this information because i have a worm farm at my school and i daily give food scraps to the worms.
We need food.
soil and water and plants
dirt
Not all Farms have animals But some do... You need sheep for the wool you need cows for milk you need chooks for the eggs And so on Hope I helped From Jana