April 21, 2015

Will Onions Kill Worms?

Question from Peggy

I put a small container of red worms in my outdoor compost. I went searching for them and I see no worms. Could the onions I had in it killed them?

Hi Peggy,
In all honesty, it is VERY unlikely that you would have killed off your worms simply by having onions in the outdoor composting system. There are numerous other potential reasons for the disappearance that are far more likely in my mind.

I’m not sure what type of system you added them to – but assuming there is any possibility of escape (eg. it is an open heap, or a bin with an open bottom etc), the worms may have simply moved on if the habitat wasn’t to their liking. Outdoor composting bins/heaps need to be set up in much the same way as an indoor worm bin if you want the worms to thrive in them. In my experience, a lot of people tend to (more…)

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