Flowers are a great addition to the vegetable garden. I inadvertently planted nasturtiums among my squash last summer. They brightened up the endless green of the garden. You could also harvest the blossoms of the nasturtiums to spice up a salad or just to munch on while you work in the garden. You can grow a lot of flowers in the garden just be sure you don't introduce what you might call a weed after a time. If you don't want flowers growing among the vegetables you can plant them along the pathways. You can plant them on the periphery. They not only attract the bees and butterflies but they make your garden look more attractive as well.