Here in western nc the red maples are just getting started, so I am starting to get ready for splits and grafting. I have been beekeeping for four years and grafting queens for two. I have an f1 vsh Italian queen that is going in to her third season and was the only hive out of fifteen to make a surplus of honey and the hive is gentle. I ask about using her as a breeder because she has a "dent" in her abdomen and has for as long as I have has her. I keep waiting for her to be superseeded but she is going strong. So is this a concern?
Inaddition if you have queen that has done well for several seasons and starts to fail would there be any reason other than being a drone layer not to graft from her?