Baptisia tinctoria (wild indigo) — perennial herb

Overview

Baptisia tinctoria is a perennial herb in the genus Baptisia, part of the Q44448 family. It typically grows around 0.9 m tall. Baptisia tinctoria grows best in full sun, and tolerates sandy and loamy soils. Its UK hardiness is rated H7. Suggested uses include wildlife gardens, naturalizing and borders. It is native to E North America.

About

Baptisia tinctoria is a perennial herb that produces yellow flower spikes from May to July. It grows to about 0.9 m and prefers full sun in sandy or loamy, well-drained soils. Native to eastern North America, it is fully hardy in the UK (H7). Suited to wildlife gardens, naturalising and borders.

Wikipedia contributors, CC BY-SA 4.0 — Baptisia tinctoria

About the genus

Baptisia is a genus in the legume family, Fabaceae. They are flowering herbaceous perennial plants with pea-like flowers, followed by pods, which are sometimes inflated. They are native to woodland and grassland in eastern and southern North America.

Wikipedia contributors, "Baptisia", CC BY-SA 4.0 — Baptisia

In the garden

Baptisia tinctoria is a perennial herb from eastern North America that reaches roughly 0.9 m. It flowers from May to July, bearing yellow spikes that sit above the foliage and provide a clear seasonal display. Plant in a sunny, open position; the species performs best in sandy or loamy soils that drain freely. It will tolerate soils that remain moist if they do not become waterlogged, but avoid heavy, poorly drained sites. In UK terms it is H7 — fully hardy — and will remain planted outdoors through winter without special protection. (For reference, the equivalent USDA range is 4–8.) Use wild indigo where a long-flowering yellow accent is wanted: naturalised meadow corners, wildlife-friendly borders, or the wilder edge of a mixed border. The flower spikes from May to July are straightforward to spot and help mark the transition from late spring into midsummer in a naturalistic planting.

Growing conditions

Best soil and position for Baptisia

Sunlight: Full sun
Soil type: Sandy, Loamy
Soil moisture: Well-drained, Moist but well-drained
Exposure: full sun
UK hardiness: H7

Plant details

Baptisia tinctoria size, habit and characteristics

Plant type: perennial herb
Height: 0.9 m
Suggested uses: wildlife gardens, naturalizing, borders
Native to: E North America

Care notes

Pruning and caring for Baptisia tinctoria

Cultivation: Prefers well-drained sandy or loamy soils; drought tolerant once established; avoid overly rich soils
Pruning: Cut back after flowering to maintain shape and encourage bushiness
Propagation: Seed, division