Tree Peony

We bought this Tree Peony with us when we moved here over 29 years ago. It was still in it's pot and we decided to plant it in the garden. It's early years were magnificent and it flowered profusely. It's now struggling and only produces a few blooms a year. We planted an ornamental cherry tree next to it which has grown so much it's overshadowed the Peony. We need to prune the cherry to give the Peony more light ... But that's for another day.