Harvesting at this time will give maximum vase life for the flower. The vase life for a peony is between 4 and 6 days depending on cultivar. A floral preservative, available at the local florist, may also help extend the vase life. Before placing in water, be sure and give the stem a fresh cut to aid in water uptake. A clump can remain in place twenty years or more and still bloom well.
Water is important, especially during bud formation and flowering.
When transplanting a peony, the best time is in September. The divisions need 3 to 5 eyes and should not be planted deeper than 1 to 2 inches. Iowa State University , Ames, Iowa. This information subject to a usage policy .