Experts and BHG readers answer.
It depends. Is it shady there? And is the soil rocky or does it have a fair amount of organic matter in it? Rock gardens tend to be done on sunny sites with stony soil, so I don't think of hostas as being a rock garden plant. However, if you have shade and reasonably good soil that drains well, then hostas will work.
Luke Miller, editor
Garden Ideas & Outdoor Living magazine