I'm getting confusing information from a well known website regarding the spread for hostas. Do they all spread around 50cm or does it depend on how long they stay uninterrupted? Also, is the white feather hosta particularly difficult to grow/look after? I've purchased copper rings to put around the plants to avoid slugs and I read somewhere recently that if I put slug pellets down now, as in early February it may stop the slugs from laying their eggs everywhere so hopefully (let's stay positive) the slug issue is in control. I'm hoping to create a "hosta corner" in my garden because they look stunning. It's a nice shady but well drained area getting a little morning sun.