This is the third year we’ve seen our seed grown, double-flowered Paeonia ostil flower, so we’ve now christened it Paeonia ‘Body Double’. We’ve grown many hundred Paeonia ostii from seed, and this is the first that’s shown any tendency toward double flowers. Most tree peonies are propagated by grafting or tissue culture, so we’ll need to find someone that’s up to the task, before we’re able to share. Hardiness Zone 4a-8b.
One of our Paeonia ostii seedlings flowered well for the first time this year, and turned out to be semi-double flower instead of the typical single flowers. We’ll continue to observe it in future years and make sure the trait is stable, but if so, this could be a lovely addition to the world of hardy tree peonies that tolerate heat as well as cold.