Cercis canadensis

About

Cercis canadensis, the eastern redbud, is a large deciduous shrub or small tree, native to eastern North America from southern Michigan south to central Mexico, west to New Mexico, but able to thrive as far west as California and as far north as southern Ontario. It is the state tree of Oklahoma and the official city tree of Huntington Beach. The prevalence of the so-called "Columbus strain" has seen the residents of Columbus, Wisconsin, embrace the plant in their city's identity. Known as the "Redbud City," the town hosts "Redbud Day" annually the Saturday before Mother's Day, organizing a variety of themed events to recognize the tree.

Summary from Wikipedia