Today is National Honey Bee Day. These tiny creatures are vital to our ecosystem. However, due to things like pesticides and Colony Collapse Disorder, scientists estimate approximately 10 million beehives have been lost since 2006. That's why we all have to do our part, and sometimes it's as simple as planting flowers. So whether you have acres of land, or only a couple pots on a patio, these are our best flowers for bees.