Peony Root Rot: Black Leaves on Newly Planted Peony

Peony Root Rot: Black Leaves on Newly Planted Peony

A first-year peony with blackening leaves on a single stem is likely suffering from root rot due to excessive moisture. Peonies demand well-drained soil and are sensitive to overwatering, especially when young.

Immediate Actions

• Reduce watering frequency; allow soil to dry slightly between waterings.
• Remove all blackened leaves and dispose of them (do not compost).
• Check soil drainage; amend with coarse sand or grit if heavy clay.
• Apply a light mulch to regulate moisture, keeping it away from the crown.

Monitoring

• Watch new growth for healthy green color.
• If rot persists, consider lifting the plant, trimming rotted roots, and replanting in a raised bed or better-drained location.

Peonies are long-lived but intolerant of wet feet; proper drainage is essential for survival.