What principle dictates that all components in a floral arrangement should blend harmoniously?

The principle that dictates that all components in a floral arrangement should blend harmoniously is harmony. Harmony in floral design refers to the pleasing combination of various elements, such as colors, shapes, sizes, and textures, so that they create an overall sense of cohesion and aesthetic appeal. This principle ensures that the individual components of the arrangement complement each other, resulting in a visually satisfying outcome.

For example, using colors that are analogously located on the color wheel can enhance harmony, as can selecting flowers that share similar shapes or textures. When harmony is achieved, the arrangement feels balanced and complete, allowing each element to enhance the overall design rather than detract from it. This is essential in floral design, as it helps evoke the intended mood or sentiment and makes for a more professional-looking composition.