I have these plants dotted around my garden, and until recently they had beautiful flowers and the bees loved them! Recently though, the flowers have died off and the seed pods (??) have been left behind.
If I dead head them are they likely to reflower? Also, if I plant the seeds is there much chance of new plants growing next spring?
I know next to nothing about gardening, so all advise (the more basic the better) is very appreciated 