Question from Will:
My son has some horse feed that has mildewed, will it be ok for worm
feed? Its a regular brand of sweet feed that got wet. I have also been
saving my potato skins and banana peels for food as well any thoughts?
Most farm animal “feeds”, and of course things like “Worm Chow” (yes it DOES indeed exist! lol) are actually excellent food materials for growing composting worms. BUT, they can be a little bit more challenging to use than your run of the mill food scraps. They tend to not only have more protein (i.e. nitrogen) in them, but they are often quite starchy – so there is definitely a good chance you will end up with a stinky, anaerobic mess if you add too much at once (especially in mixed with water first). In outdoor beds they can also attract more “critters” such as various flies (which will lay their eggs in the material, resulting in maggots), and perhaps even larger animals like rats, depending on your location.
If you feed this stuff in moderation, and up near the surface (make sure layers of bedding over top though), the worms should readily feed on it and, just generally, you should have great success with it.
As for potato wastes (including peels) – these are another starchy waste so they can be a wee bit tricky, especially if you are attempting to process a large quantity of the material. Too much starchy stuff added all at once can go anaerobic and start fermenting. My recommendation would be to make sure your potato skins etc are chopped up well and mixed with other waste materials and bedding when being added to the system.
Banana peels are a great choice for your worm bin, and can add some potassium (“K” of “NPK” fame. lol) to your vermicompost, but again I recommend making sure they are well chopped up and mixed with other wastes.
Hope this helps!