This really has been fun! One night after the whole tree was covered with crystals, I bumped it ever so slightly, and a lot of the crystals fell off...I threw them make in the tray below and added a little water. The tree grew back, just minus a lot of color! It is all full again now. If you want to try making some homemade crystals...there are a lot of recipes HERE! Did you know you can make some from sugar and some from Borax? I am thinking of making some rock candy sugar stirrers for Christmas gifts! Inexpensive, but really SWEET!