What is the main purpose of removing leaves below the water line in floral arrangements?

The main purpose of removing leaves below the water line in floral arrangements is to prevent rot and bacterial growth. When leaves are submerged in water, they decompose over time, which can lead to the development of bacteria. This bacterial growth can affect the overall health of the flowers, causing them to wilt and deteriorate more quickly. Maintaining clean water is crucial for prolonging the lifespan of the arrangement, and ensuring that leaves are not below the water line helps achieve that cleanliness. This practice is a standard technique in floral design that supports the longevity and aesthetic quality of the arrangement.