Which design technique involves placing similar materials horizontally on top of each other?

Layering is a design technique used in floral arrangements where elements are placed horizontally on top of each other, creating depth and dimension within the design. This technique allows for the integration of various materials, such as flowers, foliage, and other decorative elements, to achieve a visually interesting composition. By stacking similar materials, the designer can create a cohesive look that highlights texture and color variations while maintaining a harmonious appearance.

This method not only provides structural stability to the arrangement but also enhances the overall aesthetics by allowing the viewer to appreciate each layer's unique characteristics. It is particularly effective in arrangements where the goal is to create a lush, full-bodied look, often found in garden-style designs.

Other methods such as terracing typically involve creating steps or levels with varying heights, symmetrical design focuses on achieving balance through mirroring elements on either side, and vertical stacking emphasizes height rather than horizontal layering. Each of these techniques serves different design purposes and achieves distinct visual effects.