What causes stem blockage in flowers?

Stem blockage in flowers primarily occurs when the cut stems are damaged or crushed, which commonly happens when using dull shears. Cutting with dull shears does not create a clean cut; instead, it can crush the stem tissue, leading to a loss of sap flow. This prevents flowers from properly taking up water and nutrients, ultimately affecting their longevity and vitality.

When stems are blocked, their ability to absorb water is compromised, leading to wilting and a decrease in the overall health of the flower arrangement. Properly sharpening tools and making clean cuts are essential practices in floral design to ensure optimal hydration and to prevent blockage.

While warm water, excessive sunlight, and artificial colorants can influence floral preservation and condition, they do not directly cause physical blockages in the stems. Thus, the role of cutting with dull shears is critical in understanding the maintenance of fresh flowers in arrangements.