Overview

Baptisia australis var. minor is a perennial herb in the genus Baptisia, part of the Fabaceae family, with deciduous foliage. It typically grows around 1.5 m tall. Baptisia australis var. minor grows best in full sun, and tolerates sandy and loamy soils. Its UK hardiness is rated H7. It is native to Arkansas, Iowa, Kansas, Missouri, Nebraska, Oklahoma and Texas.

About

Baptisia australis var. minor is a perennial herb in the pea family (Fabaceae) valued for its blue flowering spikes that appear in the UK from May to July. In the wild it grows at woodland edges, beside streams and in open meadows. It spreads both by seed and by creeping rhizomes. Parasitic weevils frequently infest the seed pods, so seed-set can be low.

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 australis var. minor sits in the Fabaceae and is one of several Baptisia taxa grown for summer flower display; its common name Blue Wild Indigo reflects the colour of the blooms and its historical use as a dye substitute. Wild populations occur at the margins of woods, along waterways and across open meadows, and the species reproduces sexually by seed and vegetatively via spreading rhizomes. Plant where it can form a lasting clump and allow space for the rhizomes to spread; specimens perform well in open or lightly sheltered positions where the flower spikes are visible. Propagation by division of the rhizomes will produce true plants more rapidly than seed, and sowing is possible though seed viability can be reduced by parasitic weevils that attack the pods. Use in perennial borders, wildlife-friendly beds or naturalistic meadow planting, where the blue flowers from May to July provide seasonal structure. Note that the plant has low toxicity for people, so handle seeds and foliage with basic caution. In established stands the combination of rhizome spread and occasional poor seed set due to weevils shapes long-term population dynamics.

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 australis var. minor size, habit and characteristics

Plant type

Perennial herb

Foliage

Deciduous

Height

1.5 m

Native to

Arkansas, Iowa, Kansas, Missouri, Nebraska, Oklahoma, Texas

Care notes

Pruning and caring for Baptisia australis var. minor

Propagation

By seed and creeping rhizomes

Frequently asked questions