The red rose is the symbol of England. It comes from the history of the country.
This symbol goes back to the War of the Roses, which was the war within the country. In the 15th century two Houses were struggling for the English throne — the Lancastrians andthe Yorkists.
Red rose was the emblem of the Lancastrians and the white rose was that of the Yorkists. Their rival ended when King Henry VII, the Lancastrian, married Princess Elizabeth, the daughter of the Yorkist. Since that time the red rose has become the national emblem of England.
An oak is also depicted as the national symbol of the country.