I love the bloom on Storm Shelter but so far, the plant has not been very prolific for me. Granted, there have been circumstances! It did great it's first year ( 2019), planted by the deck. But in May 2020 a tree fell on the deck, so everything near it had to be moved to another location. This seemed to bum out my Storm Shelter, I didn't get many blooms off it this year or any perceptible growth. Other plants that were moved at the same time ( Happy Returns, Cranberry Cove, Margaret Seawright) did really well by comparison. Granted, those were older established plants but I had high hopes for an Emmerich. Let's see how it does next summer. If it doesn't like it's new location, maybe it will have to be moved again.
All from it's happy 2019 year by the deck