Sunflowers' full heads of bloom follow the sun, an attribute called heliotropism. Be sure to plant them where they receive a full day of sun, spaced well apart. Water infrequently but deeply once established to encourage vigorous, deeply rooted plants that can withstand summer storms. Plant in back borders in informal cottage gardens, at the edge of vegetable gardens, or as a leafy and flower-filled hedge, where it attracts butterflies, bees, and birds and can be easily cut for bouquets.