W. Kordes' Söhne (en. W. Kordes' Sons) is a German rose breeding company in Klein Offenseth-Sparrieshoop in Schleswig-Holstein, Germany. The company is one of the world's leading rose breeders and producers for cut roses and garden roses, annually selling worldwide more than two million rose plants at retail and wholesale. Each year, more than 50,000 new crosses of garden roses and cut roses are tested, leading to four to six marketable varieties after a trial period of eight to ten years.