For instance, when a plant is grown with a little less moisture, it tends to be more fragrant than it would be if it had received more. High temperatures also tend to intensify fragrance, and humid air holds fragrance better than dry air. In the garden, there are lots of plants with very pleasing scents that can enhance your enjoyment of the garden. If you are selecting specific plants because of their fragrance, be sure to plant them where they will be most effective and enjoyed. Consider planting the smaller varieties in groupings to increase their impact.
Full sun produces more fragrance than shade.
In Victorian gardens, the walkways would be lined with plants such as scented geraniums. When the people walked by, their long skirts and coats would brush the plants, releasing their fragrance. The following are lists of some of the many plants grown for fragrance. It certainly isn't a list of everything, but it's a good place to start. Candytuft Iberis Sweet Violets Viola Garden Lilies, esp.