Convallaria majalis (lily of the valley)

This is a plant that will either take over your garden or be impossible to establish. Traditionally Convallaria has been sold with bulbs in little plastic bags with some peat moss. I don’t believe it likes this treatment and think a well established pot full has way more chance of settling into a garden. This is a woodland plant so likes dappled sun or deciduous shade with good leafy soil.
My plants are in 15cm pots and have been potted for 2 years so are well and truely established.