I repotted them last year as I thought maybe they would fare better if they were removed fro their pots for the winter. When I repotted them I used pro mix BT and added perlite, bark fines and some worm castings that I had dried and put through a coarse sieve. I should add that they also get the water that collects in the bottom of the worm bin once a week, sometimes I cut it with water but most of the time it's straight worm brew. I would think that would be a goodly amount of organic matter, but do you have something you could suggest to add?
