[align=left]I am relatively new to container gardening.... my question is regarding whether or not sweet williams/iris's/smaller maples/barberry can survive winter in smaller containers?*.... most are in 4-6" pots at this time, utilizing an extremely loamy soil mix,my *intenion is to use them next season and am curious as to whether or not any special precautions should be taken....*west coast of *Michigan...zone 5, gets fairly cold some years..... HELP?[/align]