I'm a mind reader. Carex Pendula
Carex pendula, aka pendulous sedge
Depends what sort of garden you have, Rhiannon. It's fine in my large wild garden, not what most people want in a border.
Yes, Arum maculatum
Yes, Hosta, another likely one
Photo essential (she says, thinking b.......y Carex pendula again)
But if it's not in the UK it could be any number of plants that we don't know about
The diesel should stop everything except the mare's tail.
I think that's Nerium oleander but I've never grown it so can't advise
the chimney might be hard to arrange unless you had a panel that wasn't glass. I think the expansion/heat/contraction would break glass