I am absolutely smitten by Lychnis of all kinds and grow several types including this, my current favourite, Lychnis chalcedonica, or Maltese Cross (for obvious reasons!) It must be the easiest plant to propagate from seed. One seed head will produce literally hundreds of new plants.
The ice is provided by these little beauties, Lilium regale, which are easy and reliable and have doubled in quantity in their large pot since last year. The scent is just heavenly all day and into the night (as I found out at 3am this morning – no questions please!) and there is no doubting why. Just look at the amount of pollen on those stamens!