Never feed syrup during a honey flow
I’ve recently had a number of questions about sugar syrup and its effect on honey. To clarify, a beekeeper should never feed sugar syrup to bees when they have a honey super in place. Never. As I said in an earlier post, sugar syrup is a short-term answer for bees that have a food shortage. It is used to boost colony strength in early spring, or to add to winter stores in the fall.
If a honey super is in place when the bees have sugar syrup, they will store it in the comb just like honey. They do not know the difference.
If a colony is strong enough to warrant a honey super, it should have nothing else in the hive: no syrup, no fondant, no candy boards, no medicines. I can’t stress this enough. Furthermore, if a colony is strong enough to warrant a honey super, it doesn’t need any supplements. A strong colony will collect everything it needs plus more. A weak colony should not be given a honey super in the first place.