Beginner Gardening: Crepe myrtle sudden death?, 1 by Apopkan

Apopkan wrote:
I\'ve had two crepe myrtles outside my window for about 5 months now, and while one is blooming happily, the smaller one just lost all its leaves within a matter of days. It was happy up until then, and there was no environmental change that could\'ve affected it enough to kill it so quickly. I also have six sunpatiens, three around the base of each of my crepes, and the ones around the \"dead\" crepe are also completely wilted and brown. If anyone has any idea what could\'ve happened I\'d appreciate a solution, even if I can\'t resurect them.