I don't recall that I've seen such a thread about this subject on this website. Dave suggested I start one. What flowers do you have good luck dividing or taking cuttings?
Another thread that I think would be beneficial would be : Preparing for an upcoming plant swap.
How far ahead does one prepare for that and what plants do you feel are the most desirable for other gardeners?
Has anyone had luck taking columbines to a plant swap? scabiosa? snapdragons?