Here are some pictures of most of them, today. Some of them have as many flowers as the near-multiflora one did last year! I'm pleased. Edit (30 June 2020): Actually, at least one of them had a lot more, and is a true multiflora.
Look how muscular this megabloom is!
Location: SW Idaho, USA
USDA hardiness zone: 6
Elevation: 2,260 feet Profile post