A third gets moved, because it outgrows its boundaries, and a fourth gets composted because it is becoming obnoxiously vigorous. Yet another gets divided and leaves bare earth around it. And while I could fill that bare earth with more perennials, I'm not the patient type. Plus, some of my favorite flowers are annuals. Not only do I like the white, starry flowers, but the fragrance is incomparable.
Cosmos are incredibly easy to grow, and add an instant cottage garden feel to a bed.
Daturas have a fabulous evening fragrance and fill a spot quickly with lush foliage and flowers. It does my whole soul good to wander into a winter garden and find a pansy face smiling at me beneath the snow. Then there are poppies , both the muted sophistication of Mother of Pearl poppies or the brightness of the corn poppy. Ornamental kales in Art Nouveau colors and little girl frills, and Senecio maritima like fine tatted silver lace. I could go on and on.