Hosta

That's it! Seeing your photo, I could put some of the bigger Hostas in pots to contain their exuberance.

Bith of mine are in pots on gravel Siris but the other has been nibbled a little as it under a shrub so the snails climb the shrub and drp onto the other Hosta as I ve watched them.

My hostas look like Swiss cheese lol

lol so does mine now . The snails and slugs dont like gravel nor smashed up egg shells but make sure you grind the egg shells small like bit of broken glass keep the hosta away from other plants as they will crawl up other plants to get to the hosta.