Dianthus giganteus

About

Dianthus giganteus, the giant pink, is a species of pink native to Romania, the Balkan peninsula, and possibly nearby areas. A perennial with flowerheads reaching 1 m, it is useful in gardening and landscaping applications where a backdrop of taller plants is needed. It is available from commercial suppliers, with the Royal Horticultural Society considering it to be a good plant to attract pollinators.

Summary from Wikipedia