I use a lot of onions in my cooking, so I wanted to know if I can feed them to my worms. This is one of those tests where I already knew the results, I just wanted to document the results on video. I have been feeding my worms onions from the very beginning, before I ever knew that they were on most do not feed lists. As it turns out, worms love onions. They can be a bit smelly as they start to break down. Otherwise they are fine to feed your worms.