Got a bag of these last year. Had a wonderful flower bed, and AFAIK they are desligned to seed for more than one year. This year...not so much. Very messy, leggy wildflower plants. I realise that wildflowers are not 'tidy' in the conventional sense, but this seems to be beyond that! I'm reluctant to clear the bed, given that I spent quite a lot intending it to do a few years, but I'm not sure there's any option. Any experiences of these or thoughts? TIA.