How can a cascading floral arrangement be characterized?

A cascading floral arrangement is primarily characterized by the way flowers and foliage are designed to extend beyond the edges of the container, creating a waterfall effect. This style is often used to give a dynamic, flowing appearance, as flowers seem to spill gracefully over the sides. This technique adds depth and movement to the arrangement, making it visually appealing and often used for special occasions like weddings.

The other options provided represent different aspects of floral design. A balanced geometric shape is associated with arrangements that focus on symmetry and structure rather than fluidity, while a vertical arrangement emphasizes height and upright positioning, contrasting the flowing nature of a cascading design. Using only a single type of flower tends toward simplicity and uniformity, which does not align with the abundant and lush appearance typical of cascading arrangements.