Q.Established peony’s that had small buds that turned brown
I have several of the white I believe they are called festiva maximus. I have had them for years. This year they are not putting on buds and the few buds where very small and turned brown. They have been in the same spot for years. Want is going on????

Botrytis blight is a common fungus disease on peonies. The disease can cause the flower buds to turn brown and fail to open. You may also find purple-black spotting on the leaves and stems. Remove infected buds and leaves as they appear. Fall clean up and a little cooperation from nature (drier spring weather) is usually enough to keep this disease under control.
Bud Blast in Peony can be caused by cold spring temperatures, lack of sunlight, improper fertilization or immature plants.
This article will help you with care.
https://www.gardeningknowhow.com/ornamental/flowers/peony/why-your-peony-buds-but-never-flowers.htm