I live on 59 degrees north and 15 degrees east in Sweden. It can be quite cold in winter and bees can’t usually leave the hive a single time from about November until about middle of March, sometimes late in
Small cells and VSH
![Small cells and VSH Small cells and VSH](https://www.elgon.es/diary/wp-content/uploads/2014/11/VSHtest-14.jpg)
There have been numerous tests of varroa reproduction with bees on different cellsizes throughout the years, with the assumption that you then test varroa resistance. As far as I understand that can be true, but you don’t know to what