from these hybrids, modern breeders like Don Hollingsworth from nearby Maryville, MO (who knew?) have created hybrids like ' Garden Treasure' (pictured).
last winter i asked for trial plants from the one of the Monrovia sales rep and surprisingly received three yellows to trial. i was shocked when i found out the retail price is $100 per plant. i would not have been so bold to ask if i knew the price. the price for being on the cutting edgre. i was surprised to read these yellows don't burn up in the sun like tree peonies. i'll keep you .updated on their progress.
if i did have money to burn, i'd try 'kopper kettle'. that rusty color also comes from the tree peonies. it will be fascinating to see where it goes from here.