Love this plant. I dig the tubers each fall after frost, store them dry in a place that doesn't quite freeze over the winter, and then replant them in spring. My Black and Blue area is really gaining in stature! They overtook some smaller plants this year, but those overtaken weren't hummingbird favorites, so I don't really mind.
Mine do get full sun here, but they're shaded in the latter part of the day...say from maybe 5:00 on. The ones that preform the best here are those planted in a mix of composted manure and lots of sand. They don't require much additional water here to look good, but they bloom better if they don't go too long between moist spells.
