False Indigo is a large shrub that will reach 8-12 feet tall with a similar size spread. This shrub prefers a wetter soil and has bluish purple flowers with curved pods appearing in August. False Indigo has fibrous, spreading roots, prefers wet soil and re-grows rapidly when sheared off or broken by ice movement. These features make this an outstanding plant for shoreline erosion control, especially on sandy sites. It is tolerant of seasonal flooding and fast growing.