How to Fertilize wild peony?
Balanced perennial feed every four weeks from spring through summer

wild peony · Paeonia mascula
Also known as: coral peony; English peony
Best in a deep, fertile, humus-rich soil that is moist but well-drained in a sheltered position in full sun or partial shade. Long-lived but resents disturbance. See herbaceous peony cultivation for further information.
Balanced perennial feed every four weeks from spring through summer