Which type of flowers establishes the basic outline of height or width in a floral arrangement?

Line flowers are essential in establishing the basic outline for height or width in a floral arrangement. These flowers are characterized by their elongated shapes, which help to create the framework and structure of the design. By adding vertical and horizontal elements, line flowers guide the eye and contribute to the overall flow of the arrangement, setting the stage for the other types of flowers and materials that may be included.

In floral design, having a well-defined structure is crucial for achieving balance and harmony. Line flowers help to create this structure by serving as the backbone of the arrangement, allowing for the effective incorporation of mass and form flowers, which add volume and detail. This foundational role makes line flowers indispensable for any floral arrangement, ensuring that it has a clear design direction and visual interest.