Posted: 17/06/2013 at 11:27
Agree with keeping tender hostas in pots, in fact all of mine are in pots. Each pot has a collar of copper tape around it. Sometimes slugs will climb up the wall and drop into pots, or the leaves drape over the sides so they get up those, but on the whole it has reduced the problems to manageable size. The copper gives out a tiny electrical charge which they will not cross - I have the idea it works for snails too as they are soft bodied underneath so I assume they would get shocked too.
The very big disgusting slugs are in fact our friends, they live on small slugs, the little ones that hide under ground, and which devastate our plants. So although they may look awful, they are not the ones you need to get rid of to protect your hostas.