Need perenials that do not need to be divided
I am looking for perenials that do not need to be divided or disturbed over a long period of time. We lost our beloved golden retriever last fall and wish to plant something beautiful on her grave. She is buried on the north side of a huge blue spruce. I had a peony and irises there before, but they were not thriving (too much shade is my guess). The daisies and scabosia do well in this location. I would like something about two feet tall. Any suggestions would be appreciated. I will try to take a picture of the area tomorrow.