Welcome to the forums, Walter. The way these forums usually work is that you post something here and we try to answer you HERE. This really isn't an email service.
There are many types of
flowers you can grow to attract hummingbirds. Any tubular shaped, preferably brightly colored
flower will work. Are you looking for vining
flowers, or more compact? What exposure will these planters be in - sunny? Shade? Part sun and shade? Knowing those answers will help us in answering your question.