Wild Blue Indigo (Baptisia australis) Quick Facts:

USDA, NRCS. 2016. The PLANTS Database (http://plants.usda.gov)
Common names: Indigo Weed, Rattle Weed, Rattle Bush, Horsefly Weed
Herbaceous shrub, long-lived perennial
Fabaceae (Pea) family
Native to most of central, northeast and southeast US and eastern Canada
Hardy in USDA zones 4-9
Full sun
Prefers fertile, moist, well-drained soil but drought tolerant once established
3-4 feet tall by 3-4 feet wide
Propagate from seed, rub between sandpaper to scarify, plant 1/4 inch deep, germinates in 1-2 weeks, bottom heat improves germination
2-3 years from seedling to flower
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