Well I went out this Monday and harvested the last of the bloom stalks. It was so weird, there were actually some new short stems of blooms out in the beds. I don't think I have every had new blooms this late in the year.
Bad part of this is that some of the stalks were very dry/brown. The wind was blowing.
And no matter how careful I was, I could see seeds blowing in the wind as I cut the stalks.
I expect it will be a task next spring, gathering seedlings.