I had several do that the first year too, but now in their 2nd year those are all larger clumps with more bloom stalks than those that did bloom the first year.
"...and don't think the garden loses its ecstasy in winter. It's quiet, but the roots are down there riotous." Rumi
I planted two of these rhizomes last summer. One died out completely, the other had the bloom rot off, but it has some increases that are doing OK. Maybe I'll see it next year.
Politicians are like diapers, they need to be changed often, and for the same reason.
