Which characteristic is least likely to affect flower selection for an arrangement?

When selecting flowers for an arrangement, the weight of the flowers is typically the least significant characteristic impacting the choice. This is because most floral arrangements are designed to support a variety of flower types and weights. The structural integrity of the floral foam or vase usually accommodates flowers with varying weights.

In contrast, characteristics such as plant compatibility, vibrancy of color, and flower scent play crucial roles in the overall design and success of an arrangement. Plant compatibility ensures that the flowers chosen will thrive together and not negatively impact each other's life span or health. The vibrancy of color is essential for creating an aesthetically pleasing arrangement that attracts attention and conveys the intended emotion or theme. Additionally, flower scent can influence the overall sensory experience of the arrangement, making it more memorable and impactful for the viewer or recipient.

Ultimately, while weight can be a consideration in some very specific or unique arrangements, it generally holds much less importance compared to other factors like compatibility, color, and scent when it comes to typical flower selection for arrangements.