Is crape myrtle useful for smog control?

It is useful. Lagerstroemia indica has strong anti-pollution ability and can resist toxic gases such as sulfur dioxide, hydrogen fluoride and chlorine. It is an ideal flower for beautifying the environment in industrial and mining areas and residential areas. Li Shizhen also recorded in Compendium of Materia Medica that the bark, wood, flowers, seeds and leaves of Lagerstroemia indica can be used as medicine. The roots, leaves and skins of Lagerstroemia indica have the effects of clearing away heat and toxic materials, promoting blood circulation and stopping bleeding.