Did you know that you are supposed to pinch off any flowers that appear on basil plants? As pretty as they look in the garden, once basil flowers, the leaves tend to taste a little bitter. If you're growing basil in your herb garden one way to extend the plant is to deadhead the flowers. To do this, simply pinch off the blooms with your thumb and index finger. This will not only help preserve the plant's flavor but also channel the plant's energies into more leaf growth (instead of making seeds).
What to do with those deadheaded flowers? I like to put them in a cute little vase to enjoy. They really are quite pretty and smell good, too.