Elleme's Garden
Galium odoratum
Genus: Galium.
Species: Galium odoratum.
I have it in dry shade where it's spread right along the border from one tiny pot plant - it seems as invasive as bugle. Still, I can interplant some not-very-delicate plants such as shrubs and ferns through it, and the ground underneath stays moist in what was a dry shade spot. Flowers in May but not for long.