Paulownia or Sapphire Dragon Tree or princess tree

Has any one heard of these or have one. They grow like 15 feet a year and are considered a hardwood. They bloom a lot. I was thinking of getting some for my bees. I was just wondering if they are hard to grow? have been reading on it. It is also called the princess tree. It is native to 25 states and has medicinal values in china (where it was orginally from.) Now I am looking into see what medical value it has.

I lived at a place here that had one of those trees on the property. It was humongous and very beautiful.

Here's some medicinal properties and propogation information:

http://www.pfaf.org/database/plants.php?Paulownia+tomentosa


It's not really native to North America, it's invasive after being introduced to the states from China and Japan.
http://en.wikipedia.org/wiki/Paulownia