What is NOT recommended for fresh flower arrangements?

Using warm water for roses and tulips is not recommended for fresh flower arrangements for several reasons. While certain flowers might benefit from warm water to help with hydration and opening up during their initial cut, roses and tulips generally prefer cold or lukewarm water instead. This is because cool water helps to preserve the flowers' longevity and keeps them healthy without causing stress.

In contrast, warm water can lead to a faster breakdown of plant cells and may promote bacterial growth, which could shorten the lifespan of the flowers. Maintaining an appropriate temperature in the water is crucial for optimal hydration and overall flower health.

The other practices listed—removing plastic wraps, cutting with clean tools, and maintaining high humidity—are all positive actions that contribute to the longevity and aesthetic quality of fresh flower arrangements.