Crape myrtle leaves are turning brown from tip up

Question

Does this mean I’m over watering or not watering enough?

Answer 1

This indicates a watering issue. Either the tree is not getting enough water or there is something affecting the roots that is preventing the roots from taking up water. Check around the roots and up its water. Also, if it's newly planted, press down around the rootball, as there may be air pockets which are restricting waterflow to the roots.