We used to sing this song at primary school in the fifties. Does anyone know its origin and the rest of the song. Something tells me it might be Polish or eastern European:

Now the green leaves grow,
Tomorrow I must go,
Tonight I shelter here
So that none may know

In flowers and in garlands
I am dressed today,
Tomorrow without shoe or staff
I go away.


I'm not too sure the two above verses follow each other.