What arrangement style requires all flowers to be placed straight and facing upward?

The arrangement style that involves all flowers being placed straight and facing upward is known as a pave arrangement. This style focuses on creating a flat surface or a dense mass of flowers that are typically positioned closely together, ensuring that the blooms fill the space uniformly. The upward facing blooms contribute to a neat and structured appearance, emphasizing the colors and textures of each flower without allowing for much variation in shape or direction.

In pave arrangements, the design is typically tight and even, providing a polished and sophisticated look. The flowers are often placed at the same level, which further accentuates the flatness and harmony of the design. As a result, this arrangement style is often used in modern floral design settings where a clean and contemporary aesthetic is desired.

Other arrangement styles, such as parallel arrangements, feature stems placed at an angle or in lines to create a more dynamic structure, while free form arrangements emphasize creativity and organic shapes. Symmetrical arrangements will have a balanced layout but do not specifically dictate the upward positioning of flowers.