Question
Hi, I would like to know if you can grow a tree from the cutting of the crepe mryle tree.

Answer
Hi Anjelle,
Thanx for your question.  Here is a link from Auburn University in Alabama that has some good instructions for propagating crape myrtle from cuttings.  I've done it from seed too and it's very easy.  I hope this helps.
Tom

http://www.ag.auburn.edu/hort/landscape/crapemyrtle2.htm