Blue false indigo is a cold germinator. The seeds need to take in moisture for a few weeks, after which they need a few days with a temperature of -4° C to come up.
Baptisia contains primarily the precursing substance indican (found in woad as well). Thus, the painting recipe for woad can be used for blue false indigo as well. The plant also contains Luteolin, a yellow colourant. The dried leaves and roots are said to contain black colourant. To verify this, further research is needed.