We have a Curly Willow that was started from a cutting from my mothers tree in PA. She brought it with her when she moved back to TX. It's been growing for almost 5 years now.

In the last week or so all of the leaves started turning brown and dropping. It now has no leaves left on it.

From what I know about Willows they're fairly resistant to disease and I can't for the life of me figure out what's wrong with it. I can't see that it has any fungus that I know of on it but I'm not the most knowledgeable person when it comes to things like this.

If anyone has any ideas I am open to any suggestions or help.
I'm really worried that we are going to lose this tree and that would really be a shame since she did bring it from her home in PA.

Thanks