I thought it might be that, too, at first, Dove. But the stems and flower arrangement are different and there's no stickiness. It is quite tall though, about 30 - 40cm or so.
Just got in from our garden doing our Winter Hanging baskets and saw your post . We have some silene in summer baskets it's more baby pink, grey pinate leaves and produces loads of seed pots good because I can't split it. We also have Lychnis Coronaria white and the cerise pink grows about 60cms in the summer, it's not that by the look only my silene tends to trail but yours could be a silene just another variety.
There was someone else querying a similar looking plant earlier in the year, and it turned out to be Silene Coeli-Rosa, Rose of Heaven. One of your flowers looks quite similar.
I did just tell Soulboy I thought it was Agrostemma but having a change of mind. we've had this plant ID before, quite a while ago, the Corn cockle has the sepals large and showing around the petals, the Silene doesn’t.
Gardening on the wild, windy west side of Dartmoor.
soulboy.....I believe your unusual, delightful pink flower is Vaccaria hispanica.
Quote flora N. America......
"Flowers: calyx 9-17 mm, with 5 prominent, usually green, winged angles or ridges, each ridge with strong, cordlike marginal vein"
Quote wiki.......
"Vaccaria is a monotypic genus of flowering plants in the pink family containing the single species Vaccaria hispanica. It is known by several common names including cowherb, cowcockle, cow basil, cow soapwort, and prairie carnation."
Well, sincere thanks to everyone who chipped in and responded to my questions. Coincidentally, the peeps who suggested Silene Coeli-Rosa have answered an ID request I was about to make (pic's below).
When Lyn said there were previous posts about it I did a search and it was indeed mentioned, in 2016, and in July/August this year, the latter of which I'd read and commented on. Obviously it didn't stick in my memory.
Silver Searcher is spot on in his ID of Vaccaria Hispanica for the two flowers above, the one with the separated petals being, I think, a variety called, 'Pink Beauty'.
I love this forum, such great knowledge, helpfulness, and camaraderie.
Posts
Gardening in Central Norfolk on improved gritty moraine over chalk ... free-draining.
In the sticks near Peterborough
we've had this plant ID before, quite a while ago, the Corn cockle has the sepals large and showing around the petals, the Silene doesn’t.
Quote flora N. America......
"Flowers: calyx 9-17 mm, with 5 prominent, usually green, winged angles or ridges, each ridge with strong, cordlike marginal vein"
Quote wiki.......
"Vaccaria is a monotypic genus of flowering plants in the pink family containing the single species Vaccaria hispanica. It is known by several common names including cowherb, cowcockle, cow basil, cow soapwort, and prairie carnation."
https://www.google.com/search?q=Vaccaria+hispanica&client=firefox-b&source=lnms&tbm=isch&sa=X&ved=0ahUKEwjOsN7BwNndAhVMaVAKHbYSAYQQ_AUIDigB&biw=1920&bih=944#imgrc=Hk5zF0WmO70SQM:
https://www.google.com/search?q=Vaccaria+hispanica&client=firefox-b&source=lnms&tbm=isch&sa=X&ved=0ahUKEwjOsN7BwNndAhVMaVAKHbYSAYQQ_AUIDigB&biw=1920&bih=944#imgrc=Ro1W2B4Qedh2nM: