worms? you mean 蚯蚓
They should come with the box.
The worm's poo are fertilizer
I was told that it work like this,
Put the veggie like peels from potato etc and soil in alternate layers
let the worms do their job that is to eat the veggie.
After a while, all veggie becomes composite soil, then
starve the worms for a while, put some veggie in a net like bag to collect the worms for the next use. |