Q.Crepe Myrtle Trees
My young crepe myrtle leaves get veins and fall off. I’ve had this crepe for about 3 seasons and it was growing like a weed. This summer it started blooming, but the leaves are getting red veins from the end side branch out and then fall off. I water regularly but haven’t fed it since it was doing so well. What could be causing this?

I don't know but mine is doing the same thing. I live in central Fla. and the tree has been getting plenty of sun. I only planted it 3 months ago, and now the leaves are turning red and falling off. HELP