How large is the root system on a 4 yr old crepe myrtle?

Crepe myrtles are small- to medium-sized deciduous trees or shrubs that typically have a rounded crown and showy, crepe-like flowers. The root system of a 4-year-old crepe myrtle will typically extend about 2 feet deep and 3 feet wide. However, the actual size of the root system can vary depending on the environmental conditions and root restrictions in the ground.