Alright so I have been looking to grow a mimosa tree for a while now just for the purpose of having one. Before i went to be last night I watered the little guy and now that I have come back home from work I have noticed a problem with my tree. Here a couple links to pictures, just yesterday the other leaf (don't know if that is correct) looked just like the other. I am really confused and would like some advice or help on what to do to get this guy healthy again.
http://www.flickr.com/photos/57458586@N04/9044857731/
http://www.flickr.com/photos/57458586@N04/9047078490/