I had problems growing it until I put it in almost total shade. It gets about an hour of sun in the evening,
In my garden it likes dark moist shade all summer. It stayed small for 3 yrs in dry shade but when I put it in dark shade it has become a monster. I have to divide it every two years or it takes over my hostas.
I only have success dividing it in early Spring, when it is cool,and lots of rain. If I divided it later Spring the divisions died quick.
