For our bees, I planted a sunflower jungle. Bees just loove these large flowers with their abundance of nectar. And we are anticipating a large honey harvest... classic win-win! Once they are bee-eaten, the birds are getting interested in the sunflower seeds.
Now I have learned that sunflowers can do even more than being pretty and nutritious to a variety of beeings:
Apparently sunflowers have the ability to draw cesium and strontium - both radioactive chemicals - out of the soil, which is why activists have started a huge project to send sunflower seeds to Japan.