Blue false indigo is native to eastern parts of North America. Reaching 4 feet in height, it makes for a massive perennial with the most stunning spires of lupine-like blossoms. False indigos are low maintenance, drought tolerant, and overall very easy to grow.
B. australis and others in the genus have historically been used as dye plants. Blue false indigo makes a green, yellow, or brown dye depending on the chemical extraction method used.
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