hippuris vulgaris grows in july in a pond in sanssouci park. potsdam, germany

grass waterland leaves wild field stem herbal perennial horse-tail herbaceous common-horsetail horsetail herb grows july pond park horse tail common aquatic plant potsdam germany sanssouci nature water background natural green summer environment river lake landscape outdoor blue color beautiful beauty season tree abstract sky garden closeup white leaf plants hippuris vulgaris mare's-tail