OK, Mary. Let me take some pics of my Espoma Bulb fertilizer bag:
Front of the bag
Back of bag with analysis
Start with 1 tsp for new -3 years old peony. Established peony may need 2 tsp. Don't overdo this rate because it will cause all sorts of weird growths instead of uniform growth.
Properly applied, the peony looks like this
Mackinac Grand
Overfertilized, the peony's growths are not uniform, some tall stems, some short stems, not in a uniform mound shape;
Henry Bockstoce