Q.Winter feeding vermicompost
How deep to worms go in the winter in NJ? Can tube feeding be used to feed them if the tubes are kept warm?

Certified GKH Gardening Expert
They burrow very deeply - hard to say exactly how far down. However, when the soil warms up to around 50 degrees F they begin to make their way back up. Research says they shouldn't be fed much if anything during the winter.
Here's an article for you: https://www.gardeningknowhow.com/composting/vermicomposting/care-and-feeding-of-worms.htm