Those over priced plastic worm bin farm thingies recommend using coco as medium for the worms. I wonder what would happen if you mixed a bunch of guano and various meals and rock powders and a little burnt whatnot with a pile of coco and a few hungry worms? Maybe fill beds with what's left after the worms have eaten and fornicated themselves to death and then use. Eh?
I admit to having one of those overpriced plastic stacking worm bins.
It has held up well for two years and I love it.
Be warned. If you don't like worms and getting your hands dirty, stay away.
But if you want a seamless circle between worms, microbial teas, and super soil, then get your worm on.
Tea solids and kitchen scraps go in, runoff fluids get added to tea, worms and castings get layered into three gallon grow pots.
Worms survive the flower cycle, but I have yet to study how well their populations adjust to the new environment.
Will inspect an old root ball for eggs. If eggs are present, worm populations are expanding in the pot.
Coco is an extravagance for my worms. Egg cartons and other paper is what I use for the required fiber component of worm feed.