Posted: 28/09/2014 at 17:08
Artjak, I was just about to say astrantia too, but add that if you cut it back hard after first flowering it will give a late second display. Which brings me to the chelsea chop, to extend flowering later. Do this to some of your plants, sedums, phlox etc and they will delay flowering. You can cut back just some of the stems for the same effect.
Also if you prune your roses after the first flush they will come back hard with a second flush almost as good and lovely clean foliage. Something I have just discovered by happy accident.