Green Grow the Rushes O
 /ˌɡriːn ˌɡrəʊ ðə ˈrʌʃɪz əʊ/
  /ˌɡriːn ˌɡrəʊ ðə ˈrʌʃɪz əʊ/
- an old English folk song in which the line 'Green grow the rushes O' is repeated in every verse. Each verse names a number of people or things, mostly connected with the Bible, and repeats all the things named in the previous verses. The song is sometimes sung by children in British schools.