Return of Ragged Robin

Quite a surprise to me but a group of five Ragged Robins (Lychnis floc-cuculi) has appeared in the South Field. Last seen in a very similar spot in this field 12 years ago. I am puzzled as this is not a very damp area which they seem to prefer and there are no examples close by to my knowledge. One possible explanation is that seeds from 12 years ago have been waiting for a wet winter (which we had last year) to germinate. Who knows but they area lovely flower.