False Indigo Type: Perennials Height: Tall 3' (Plant 3' apart) Bloom Time: Early Summer to Summer Sun-Shade: Full Sun to Mostly Sunny Zones: 3-9 Find Your Zone Soil Condition: Normal, Acidic, Sandy Flower Color / Accent: Blue / Blue
10 Plants That Self-Seed for Prairie-Style Gardens
False Indigo (Baptisia australis) is a big perennial that's tough as nails, false indigo kicks off summer with spires of pure blue (cultivars come in a variety of other colors). Its rounded form makes a great contrast to the verticality of prairie grasses. False indigo develops deep taproots, so site it in a spot for the long term. It self-seeds modestly, and it's safe to move seedlings when small. Grows up to 4 feet high and wide in Zones 3 to 9.
Baptisia Also called false indigo for its blue springtime flowers, baptisia is a native prairie plant with deep roots that push through the toughest clay soil. Other selections extend baptisia's color range to white, yellow, and purple. Name: Baptisia selections Zones: 3-9