Q.Peony plants
I’ve had Peony plants for 3 years and have never had a bud. What is happening? My leaves grow very green and abundant but start to turn brown in the middle of the summer. What should I be doing or what should I not be doing?
Peonies can take several years to began to produce blossoms.
You also may have to much Nitrogen in the soil and a Phosphorous deficiency.
Bone Meal can be applied to correct this and promote buds and flowers in the spring.
Here is a link with more information.
https://www.gardeningknowhow.com/ornamental/flowers/peony/why-your-peony-buds-but-never-flowers.htm