I misunderstood the question then, so you were just asking if it was OK to cut the foliage? General rule of thumb is to give them six weeks if you can't leave them until they die back. I get the impression, might not stand up to scientific anslysis that they die back earlier if one snips off the seed pods, if any. In my mind also rejuvenating the bed meant digging it over .
that they die back earlier if one snips off the seed pods, if any. In my mind also rejuvenating the bed meant digging it over 
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