A well-designed garden bed balances both vertical and horizontal space to create depth, structure, and visual interest. Taller plants such as ornamental grasses, shrubs, and small trees add height and draw the eye upward, while spreading perennials and groundcovers fill in the lower layers and create a lush, cohesive appearance.
By combining plants with different growth habits, you can create a landscape that feels fuller, more dynamic, and visually appealing throughout the season - rather than a flat row of same-height plantings.