Lilly of the valley, Solomon’s Seal

Pot them on?
Or straight out into the ground?

 

Unsure exactly. Brought from gumtree local. So will harden them

 

If they are from a local person on gumtree its likely that they are from that persons garden so already hardened off. But as you say hardening off is not a bad idea. They do spread well - 4 years ago we tried to get some going - they certainly are growing well now and finding lots of ways of spreading out. We had tried plain green and variegated, the variegated one struggled but the green one are marching on strong.