I am planning a sort of bog with cardinal flower, mimulus, lychnis, monarda and maybe a fountain to attract hummingbirds. Since my soil usually dries out in summer I was going to use a rubber liner or maybe a wading pool with some slits for drainage. But I am concerned about hardiness regarding winter drainage - the garden would either be muck or a block of ice for about six months. Would this be a problem?

Thanks.

Lisa