I have one on the north side of my house in northern Wisconsin. It gets very little (if any)late afternoon sun. It always grows to about 5 feet and flowers very well. It is a great plant for heavy shade. I've divided it once and am planning to divide it again next spring.-- It's about 5 years old.

This plant does indeed grow and flower well in full shade. The root competition from large trees may, however, be a problem. Kirengeshoma needs a lot of moisture to do well.

My plants seemed to prosper when they were given more sun!

I agree they like adequate moisture. The one I have that has really come on nicely is in a northeast exposure. The soil is deep, rich and moist. The other two, in a more woodland setting have not put on the growth of the first. They do their thing, but there is little hint of what they COULD become.

Still, though, a very nice plant... lovely foliage, interesting flowers and very uninsistant in requirements.

Mine is now in its third summer, and is just lovely -- for a plant that dies to the ground each winter, it is amazing how large it is by midsummer.

I did do one thing different this year -- in Spring I released several thousand lacewing eggs in the woodland garden (at least I THINK I did -- those things were too small to see) and so this year there are no nibble holes in the leaves. My K. palmata thinks it's in a moist spot -- the hose and I have it fooled!

Pat