Pruning should also be done at the right time. Cut back peonies in the fall, after the first frost, to about 2 to 3 inches above the ground. This prevents disease and prepares the plant for healthy growth in the spring.
8. Smothering Peonies With Mulch, Shade, Or Competition
While mulch can help retain moisture and suppress weeds, too much can smother peonies. Apply a thin layer, about 2 inches, around the base of the plants, keeping it away from the crowns to prevent rot.
Peonies thrive in full sun, requiring at least 6 hours of direct sunlight each day. Planting them in shady areas or where they face competition from other plants can hinder their growth and blooming potential. Ensure they have ample space and sunlight to flourish.
