Marian Pintilie asked whether the Black Locust (Robinia Pseudoacacia) grows on other continents. "I'd rather say Europe instead of Hungary. I am from Romania, and here is the same thing.Pure Acacia honey never cristalize. And for sure Black Locust tree grow in other european countries I'm curious, this tree did not grow on other continents?" The black locust tree is native to the eastern half of the North American continent. According to F.N. Howes' book "Plants and Beekeeping", the tree was taken to Europe in about 1640. It is an excellent wood for fence posts, being very resistant to rot, but the irregular grain keeps it from being a good lumber wood. It also is an excellent firewood. The black locust is a favored nector source here too. It comes early in the spring (late April - early May) so your hives have to strong early. But it is not a reliable source; some say it delivers a surplus only one year in five. What is the European experience in this regard? Some years the tulip poplar (Liriodendron tulipifera) and the black locust overlap making it difficult to get a pure black locust honey. However, there has been some discussion here lately about the failure of the tulip poplar flow in recent years. It had been a mainstay, now it seems to be missing from our spring nectar flow. Both honeys crystalize very slowly. Regards, David Morris Laurel, MD, USA