Diagnosing Half-Green, Half-Brown Leaves on Crape Myrtle

One of Four Affected

4 crape myrtles (1 dwarf, 3 large) in full sun, good air, daily water. One (or more?) has leaves half green, half brown.

Possibilities

1. Root Rot: Poor drainage on one side? Low spot? Cut water to every other day, 45–60 min.
2. Tip Blight: Fungus. Fall fertilize, spring fungicide labeled for tip blight.
3. Dwarf Weakness: Many dwarfs genetically weaker.

First Steps

Reduce watering. Identify if dwarf is the victim. Fertilize fall. Spring fungicide if needed.