A rather unusual campion with thin dividing stems, carrying many small white flowers which open from long slim buds, the calyces being striped in red. As they age, the petals twist like small propellers! Originating in the Alps and mountains of Provence, it has spread including to a location where it is a locally naturalized alien, discovered in 2005 on a coal mining spoil heap near Charleroi (Damprémy)!
Sow immediately at any time onto preferably a soil-based compost, covering with fine grit to approximately their own depth. Germination MAY be quicker if kept at 15 to 20 degrees C. but many seeds WILL NOT come up the year they are sown, needing winter chilling after sowing, and ONLY come up with natural spring germination.