DON'T KNOW OFFICIAL NAME

This is one the botanists have renamed - it used to be gallium odoratum but is now asperula odorata so you may find it under either name.
It is pretty vigorous and the smallest piece will regenerate so think carefully before planting it

Yes, I planted some from my Mum's garden
last year so far it doesn't seem to have spread
too much and is really pretty with it's white
flowers in the Spring. My soil is quite clayish
and Mum's is more sandy loam which I think
it prefers.