Last year I had a single fan of either Rustler or Tom Johnson that had only one fan, and one of them started to put up a bloom stalk. I nipped it out. I doubt it helped much. This year I have 2 fans of Tom Johnson and one of Rustler. They are in too much shade to thrive well and the rhizomes received from a certain vendor were small.
Now I have another decision to make. I have only one fan of Drinks at Sunset, and it, too, is sending up a stalk. But have waited so long to get and see this one that think I'll let it bloom and then fertilize it after bloom to encourage new starts. And hope for the best!