A: After looking at your photos and examining the samples of your leaves, I believe the spots are caused by a fungus called Cercospora lythracearum as it is the most common fungal leaf spot on Lagerstroemia indica (crape myrtles). In Florida the leaf spot disease was severe in 1976, especially on the pink-flowering variety ‘Near … Continue reading Q: I have spotted leaves all over my crape myrtle. What could be wrong?