I have two in my yard. One is one my grandfather set out in the sixties or seventies. The other I think I got out of the woods and set out. To answer your question; my bees works the snot out of a magnolia tree, especially the older one. I have even found some of the anthers/filaments in the hive. It's like they couldn't get enough of it. Maybe they set it at the window in a glass of water..,