And for me to say bees do not work grapes, well someone usually comes up with the exception :-D Fat beeman says he gets kudzu honey. He calls it smurf honey. I for one have had no luck with it.
Often a honey does not taste like its source. In most cases claiming a honey from a source is a gimmick, at least in my parts. Everything blooms at once and you can not isolate the source. I knew of someone who had a patch of strawberries at their produce stand, an acre or so. She would market the honey as strawberry honey. As the poster above mentioned blackberry honey folks will try that with clover around her too.. Everything in our area pretty much blooms in the same time frame and our season is short. Privet, tulip popular, blackberries, wild cherry, china berry etc. It all goes in the same hive and should be marketed as wildflower honey.
The exception is the sourwood bloom in July in the sc-nc mountains.
Not sure what part of the state your home is in NC I did not map it but if you are curious about the blue honey google it. Parts of NC have hit and miss years with blue honey. There are several theories none proven, one being gall berry, another theory being the mineral in the soils in that area. Also some thing to do with the bees stomach enzyme and the minerals if I remember correctly. The Fort Bragg area is one known for the blue honey.