We are in the middle of a very long drawn out spring. In 7 years at my current location, we usually see a few days over 70 every week or so from the beginning of April onward. Meaning that typically we start raising cells the end of March or early April and continue through the season.
This year is evidently not one of those years. My first batch of cells (round 1) is coming up on 20 days post emergence with no mating weather in sight. I think a few got out on a couple of borderline days, but I think the success is pretty low.
I have a batch of cells ripe Wednesday. I am somewhat inclined to dig through the round one nucs and kill any virgins and replace with a fresh cell.
My question is this. The bees in the nucs are getting old. There was a little brood 20+ days ago when I placed the last cells, but that will be gone. Would you just kill the virgins and place a new cell? Or add another scoop of bulk bees? Or dump them and restock with fresh bees? Or forget it entirely, setup a fresh set of nucs (minis), and wait another couple weeks for round one so I can kill drone layers instead of virgins??