Lots of those illustrated on line are just labelled Tree Peony white. If you need care instructions just google
tree peony care. Sorry not to be more helpful.

That's what I was going to say too.
You could try finding more info by asking the grower for more info. The label should give you the growers details.

Thankyou.

I like that idea SBG. If we all started contacting these growers they might start putting the proper info on their labels! I bought a tree peony last year too...no name either, just 'Tree Peony, Purple'.

That is a very good idea, but the label does not show who the grower was, nor anything else for that matter. I will contact the Garden Centre where it was bought and see if that helps.