I've learned quite a bit about the many flowers, both perennials and annuals for those of us living in the upper Midwest here in the US. I live in a zone 5 for the most part. I'd like to plant a few flowering shrubs that attract hummingbirds and was wanting to ask if anyone here has suggestions? Weigela and Rose Of Sharon come to mind, but whether they actually develop enough nectar to attract hummers or not, I have no idea.