I also have one of those humming bird feeders and I caught this picture outside my bedroom window last year. I often get many humming birds.
This was grown from one of those wildflower mixes and spread it onto an open area of soil. Growing from seed takes a long time, but the results are worth it. The only difficuliity is that you have to pull out weeds that get mixed up inthe middle of it...and it's not easy to tell what the weeds are until the plants get bigger. I always plant this mid May (since I live in Michigan). Although I think early May would be safe as these plants are kind of tough when it comes to frost.
More from the wildflower garden above.
These Daylilies are super easy to grow. They're along the corners of my garden. They come back every year and bloom almost all summer. Most people have seen them before. The ones I have are getting bigger every year. They can be divided (ideally in the spring) and planted elsewhere.
Daisies are also easy, come back every year and the flowers last about two months.
These are annuals, so you have to plant new ones every year, but they are easy because they are one of the few flowers who do well in both light and shade. They seem to do best in partial shade.