Plants of Baptisia take two or three years to become fully established and should be staked.
Baptisia Plant Growing and Care Guide
Common Names: Wild Indigo: Blue, white, hairy. False Indigo, Rattleweed, Indigo weed, Horse fly weed. Family: Fabaceae. Life Cycle: Hardy perennial. Height: 16 to 72 inches (40 to 180 cm). Native: North America.
Growing Region: Zones 3 to 9. Flowers: Species dependent: Late spring and early summer. Flower Details: White, blue. Pea-like. On top of long thin spike-like stems. Fruit: Blue-black. Pods. Oblong. Summer through autumn. Foliage: Herbaceous. Trifoliate, Compound, Simple. Alternate. Grey-green. Blue-green. May be Cordate and hairy.
Sow Outside: 1/4 inch (6 mm). Start of spring or late autumn. Spacing 24 to 36 inches (60 to 90 cm). Sow Inside: Seeds should be soaked for one day. Use peat pots. Germination time: one to seven weeks. Temperature 70°F (21°C). Six or seven weeks before expected last frost. Transplant outdoors following the last frost or at the start of autumn.
Requirements: Full sunlight, partial or light shade. Good drainage. Soil pH 5.5 to 7.0. Sandy soil. Can survive in dry soils. Provide support. Water during prolonged dry spells. Has very deep tap roots so do not disturb. Cut back dead leaves in the autumn to slow leaf fall. Propagate: dividing in the spring in cool areas or in the winter in warmer areas. Miscellaneous: Named Blue false indigo due to its use as a dye when True indigo (Indigofera tinctoria) is not available.