The one thing I learned about Baptisia is to plant it right where you want it the first time, allowing for growth. As a pretty novice gardener, I didn't know this --- I planted two that were too close together. Trying to dig one out after only a year was backbreaking! They have a large tap root that didn't want to go. Other than that it's certainly one of my favorites -- like you say, it pretty much takes care of itself and it's beautiful year-round. Thanks for the article!
It's not really that difficult- you just need a very sharp spade and some weight. Of course, this is a very good chance to divide it inot 4 parts and let some friends enjoy this striking plant. I also have a white one. It's not nearly so vigorous, but it's doing very well and is very attractive also. The dry seed heads ("rattles") are worth the risk of seedlings in the spring.