Supposedly the flower spikes of gayfeather can be cut and hung upside down for dried flower bouquets. I have not tried that. I have left a few spikes on the plants to turn brown and ripen. If left in the garden over the winter, some seeds will germinate and add to the plant colony the next year. Leaving all the flower heads to ripen produced more seedlings than I wanted. Letting the plants seed themselves is far easier than collecting seeds and planting them. Home collected or commercially packaged seed needs at least two weeks of cold stratification before it can germinate.
Source : https://ravallirepublic.com/news/local/article_cc787424-6c06-529a-b31b-e900451604a4.htmlThanks you for read my article Everything You Need To Know To Stay Bug Free This Summer