Cornflower (Centaurea cyanus), Altona, Hamburg, Germany, Europe

altona asteraceae bachelor's button basket flower bloom blossoming blossoms blossom bluebottle blue botany boutonniere flower centaurea cyanus central europe compositae cornflowers cornflower cyanus segetum deserted empty europe flower german federal republic germany hamburg in flower middle europe nature nobody no one no people norddeutschland northern germany north germany plants plant uninhabited