Their honey is from whichever plants are in bloom at the time. My home is near several thousands of acres of macadamia trees. So that is one type. The two other big nectar flows are lehua (the flower of an endemic Hawaiian tree, the ohia), and the albizia tree, a nasty invasive species that makes very nice honey. I tried moving my hives to the other side of the island for the kiawe bloom (Hawaiian mesquite), but it was more trouble than it was worth, so the girls stay close to home now.
The rest of the time is pretty much tropical wildflowers. I usually leave that honey in the hive for the girls to eat. It never gets cooler than the mid 50s here at my elevation, so there is no over-wintering to contend with.