I heard a version that I was told had something to do with Tudor propagander, about the untiting of the houses of York and Lancaster.

Rose, rose, rose, red
shall I ever see thee wed?
I shall marry at thy will sire
at thy will

Red rose, White rose
Now unite on Englands throne
We shall have no treason, none sire
Grow rose, grow

It is something like that anyway, and then there are many verses after that I dont know.