I have what is suppose to be 'high noon' and I thought it was a tree peony, but it dies back to the ground each year. It had about a dozen flowers this spring after coming back. Is there an intersectional (?) that looks like Highnoon?
I am fairly new to peonies, so was curious about 'intersectional' ones. Now I know a bit after searching.
Below is a link to a site that shows a yellow intersectional peony, Garden Treasure. ($160...YIKES!)
Maybe that is what you have? The pics are similar to my untrained eye.
Here is a link that might be useful: yellow tree peonies