How to Prune blue false indigo?
Cut down once foliage has blackened

blue false indigo · Baptisia australis
Also known as: bastard lupine; false indigo; false lupine; golden indigo; indigo weed; tall false indigo
Grow in open, porous, preferably sandy soil in full sun; drought resistant once roots have penetrated the soil. Best left undisturbed, although vigorous clumps may be carefully divided in spring.
Cut down once foliage has blackened