"Here we go round the mulberry bush,
The mulberry bush, the mulberry bush.
Here we go round the mulberry bush,
On a cold and frosty morning."  

This well-known children's nursery rhyme may have begun life as a song or chant by inmates of Wakefield prison as they exercised around a mulberry bush within the prison grounds.

The mulberry bush (or more accurately, tree) still thrives at the prison today.