 The 11th-century Jewish scholar Simeon Seth describes both red and yellow carrots, as does the 12th-century Arab-Andalusian agriculturist, Ibn al-'Awwam.Cultivated carrots appeared in China in the 14th century, and in Japan in the 18th century.There are many claims that Dutch growers created orange carrots in the 17th century to honor the Dutch flag at the time and William of Orange.