Leaves contaminate the vase water, just like stems do. The stem has to be in water; the leaf, however serves no purpose in the water, in fact, it has a negative impact. Therefore, it is recommended to remove the leaves right up to the water level. Leaves take much longer to become limp and there is less stress on the flower, which already has to put out enough effort to keep its equilibrium.
Flowers are grown, shipped and sold over the world. The flower stems as well as leaves carry micro-flora with them all the way to the customer’s vase. The conditions before harvest also influence the flower development in the vase.
All of the contamination, remnants of fertilizer, plant protection products and micro-organisms travel along with the leaves and contaminate the vase water, the so-called bio-load of the vase water. In this case, hygiene and prevention of infection of the vase water provide the best contribution to a long vase life and vase water that is not smelly. That is why removing the leaves and leaf remnants that would otherwise end up in the vase water is recommended.