Almost 20 years ago after having my back yard landscaped and being pretty much out of funds to plant anything I was wandering around the Canadian Tire greenhouse ( which in those days was pretty sad!) during their July summer sale and picked up 2 of the saddest looking little Leopbard's-bane you ever saw for 0.99 each! In about 6 weeks they were not just flourishing but flowering! They are still there - have been split and moved several times but the offspring of those two sad little plants just go on and on.
Thanks for this information Todd - I have no idea which one I have but sure recommend it as a great spring plant!