Wild Blue Indigo
Baptisia australis
A stunning prairie native that produces dramatic spikes of deep blue lupine-like flowers in late spring, followed by attractive seed pods that rattle in the wind. This long-lived perennial forms impressive clumps over time and is virtually maintenance-free once established, making it a cornerstone plant for naturalized gardens.
Sun
Full sun to partial shade
Zones
3–9
USDA hardiness
Height
3-4 feet
Planting Timeline
Showing dates for Wild Blue Indigo in USDA Zone 7
All Zone 7 native-wildflower →Zone Map
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Wild Blue Indigo · Zones 3–9
Growing Details
Zone-by-Zone Planting Calendar
Complete Growing Guide
Soil: Clay. Soil pH: Acid (<6.0). Drainage: Good Drainage, Occasionally Wet. Water: 'Carolina Moonlight'Soft yellow blooms, 3-4 feet tall 'Screeming Yellow' var. minordwarf, 'Carolina Moonlight', 'Screeming Yellow', var. minor. Height: 3 ft. 0 in. - 4 ft. 0 in.. Spread: 2 ft. 0 in. - 4 ft. 0 in.. Spacing: 12 inches-3 feet, 3 feet-6 feet. Maintenance: Low. Propagation: Root Cutting, Seed. Regions: Coastal, Mountains, Piedmont.
Harvesting
Puffy, inflated seed pods filled with many seeds appear after bloom. They ripen when they are very black and up to 2.5 inches long in late summer. People enjoy the seed pods' appearance for ornamental interest or even dried flower arrangments (when the seed pod is with the stem).
Color: Black. Type: Legume. Length: 1-3 inches. Width: 1-3 inches.
Garden value: Good Dried, Showy
Harvest time: Winter
Bloom time: Spring, Summer
History & Origin
Origin: Central & Eastern U.S.A
Advantages
- +Disease resistance: Deer, Diseases, Drought, Dry Soil, Erosion, Fire, Insect Pests, Poor Soil, Rabbits
- +Attracts: Bats, Bees, Butterflies, Hummingbirds, Pollinators
- +Wildlife value: Its flowers are attractive to butterflies, bees, and other insects. This plant is also a larval host plant for a variety of butterflies including: Orange sulphur, Clouded Sulphur, Frosted Elfin, Eastern Tailed Blue, Hoary Edge, and Wild Indigo Duskywing.
- +Low maintenance
Considerations
- -Toxic (Bark, Flowers, Fruits, Leaves, Roots, Sap/Juice, Seeds, Stems): Low severity
Companion Plants
Plant Together
Little Bluestem Grass
Provides structural support and creates natural prairie ecosystem conditions
Purple Coneflower
Attracts beneficial pollinators and shares similar soil and water requirements
Black-Eyed Susan
Complements bloom timing and attracts diverse beneficial insects
Wild Bergamot
Repels harmful insects while attracting native bees and butterflies
Switchgrass
Provides wind protection and mimics natural prairie plant communities
Nodding Onion
Deters root pests and rodents while adding late-season blooms
Wild Columbine
Thrives in similar partial shade conditions and attracts hummingbirds
Spiderwort
Provides ground cover and shares tolerance for varying moisture levels
Keep Apart
Crown Vetch
Aggressive spreader that can outcompete and smother native wildflowers
Autumn Olive
Invasive shrub that creates dense shade and alters soil nitrogen levels
Johnson Grass
Allelopathic properties inhibit germination and growth of native plants
Pests & Disease Resistance
Resistance
Excellent disease resistance, very few problems
Common Pests
Generally pest-free, occasionally aphids
Diseases
Root rot in poorly drained soil, otherwise disease-free