They stay green all summer and then in the fall they turn a rosy pink/red. I have learned never to plant them along a walkway. In the fall they attract a huge amount of bees and wasps and all kinds of insects with stingers. I have one more clump to move.. maybe next spring.
See they even look lovely all covered in snow. This photo was taken on Oct 10, 2009.
They can complement other plants in your perennial garden. I took this photo recently in town, someone knew what he was doing in this perennial bed.. the texture and colors work really well together this time of year.
Another crappy cloudy, dreary day..cold too.. Cold, wet dreary days in October=8. Sunny and crisp=1. Snow and cold=1. Indian Summer where are you? :)