White Powdery Substance on Crape Myrtle Flowers

Question

I’ve just noticed a white powdery substance on my crape myrtle flowers. What is it and how do I get rid of it?

Answer 1

It sounds like powdery mildew. This article should help with that: https://www.gardeningknowhow.com/plant-problems/disease/powdery-mildew-homemade-and-organic-remedies.htm