We know that peonies can live and thrive for a long time--perhaps more than our lifetimes. When walking through an old local cemetery, I have seen superb clumps of varieties that must have been there for decades. A neighbor has marvelous clumps of Sarah Bernhardt that bloom profusely every year. However, I wonder if sometimes division is needed. I have a clump of White Frost that this spring had many smallish blooms and seemed very dense. I decided to dig part of it this fall and discovered that the roots and eyes were incredibly compact. I wonder what others do and feel about division to invigorate in the long run.