I bough a bunch of fans about 5 years ago and got some extras from my father in law and planted them in a row out in my field. I watered them their first year in the ground, and not since! Nor have I fertilized. I don't dead head/ clean up spent scapes or pull off bee pods. I do yank up the grass that infiltrates their space- twice a year if they're lucky.
They bloom and rebloom til fall. They're always a cheery sight with their golden flowers. There's a reason Stellas are grown In landscape applications- they're not needy, they're hearty, they multiply and they're pretty, plus they are fragrant. I need to divide mine this year and look forward to making the row wider and longer.
This is the best picture I have of them. I'll get a better shot this summer...