Blue False Indigo (Baptisia australis)

Blue False Indigo (Baptisia australis) is an upright native perennial with clover-like blue-green foliage. Small blue-purple flowers cover racemes up to a foot long above the foliage mound in spring. Large seedpods follow, turning black when ripe and adding ornamental interest.

It flowers best in full sun and acidic, well-drained soil. Drought tolerant once established.

Safety note: The foliage is mildly toxic to mammals if ingested. Keep it away from pets and children who may chew plants.

Growing details

• Plant type: Perennial
• Origin: Central and eastern North America, including Georgia
• Mature size: 3–4 feet tall and wide
• Spacing: Approximately 3 feet apart
• Hardiness: USDA zones 3–9
• Light: Full sun to part sun; flowers best in full sun
• Soil: Acidic and well-drained
• Flowers: Blue-purple racemes up to a foot long
• Bloom season: Spring
• Foliage: Clover-like blue-green leaves
• Seedpods: Large pods that blacken when ripe

Care and garden use

This low-maintenance perennial develops a shrub-like appearance as it establishes. Plants grown in shade may become taller and require staking. If trimming is needed, do so after flowering.

Baptisias serve as host plants for several butterfly species. Use as an accent or in grouped plantings, borders, wildlife gardens, naturalized areas, native gardens, foundation plantings, or suitably sized containers. Pair with purple coneflower, goldenrod, or butterfly weed.

Image credits: Jean-Pol GRANDMONT, 0 Baptisia australis (Y), CC BY-SA 3.0; photo by Tim Waters, Baptisia australis (Leguminosae). Plants naturally vary in appearance and may differ from the images shown.