The Californian poppy, Eschscholzia, blooming its head off in one of the Alpine Houses at the Royal Horticultural Society gardens at Wisley, Surrey.
I remember that our neighbour (in Olden Times), Mr and Mrs Greenall, grew these very successfully in north London – their garden wrapped around the corner of the road – a closely cut lawn and then a swathe of these silky-petalled orange shockers. If you haven’t ever stopped to touch the petals, please do. Quite addictive.
Mr Greenall I also remember raced motor cars in the Even More Olden Times.