Here's a nice comprehensive article that addresses many issues from overwintering to plant selection to good recommendations of combinations when creating perennial containers.
http://www.perennialresource.com/index.cfm?fuseaction=articles.articleDetail&articleID=78
Terrific Article
that is a very informative and helpful site,
thanks for the link
mickgene--excellent site with all kinds of good information and pictures of great plant combinations, both for containers and the garden. Thanks for bringing it to my attention.
Everybody, be sure to check it out... Happy gardening. t.
Glad you both found it useful. So many resources, so little time!