|Baptisia australis 7 years after planting|
Baptisia australis is considered a long-lived perennial (barring any catastrophe, abuse, or major disruption to the plant or root zone) and is cold hardy in zones 3-8.
The Perennial Plant of the Year is named annually by the Perennial Plant Association, whose board of directors include plantsmen and women who represent nurseries, universities, botanical gardens, and other horticulture entities. The Perennial Plant Association hosts a Plant of the Year Committee, who votes yearly on one of several previously nominated perennial plants, and then nominates future selections based on the following characteristics:
- Suitable for a wide range of climatic conditions
- Low maintenance
- Pest and disease resistant
- Readily available in the year of release
- Multiple season of ornamental interest
- Easily propagated by asexual or seed propagation
Uses and information about Baptisia australis can be found in the Perennial Plant Association's flyer, as seen here:
As mentioned in the above flyer, Baptisia australis can be quite useful in prairie gardens, landscapes, or restoration, along with native and related species, Baptisia bracteata (cream to yellow flowers) and Baptisia alba (white flowers). The University of Minnesota bulletin Plants in Prairie Communities: Characteristics of Prairie Plants lists all three species as being used in mesic plant prairie communities.