What does it take to refrigerate or preserve fresh flowers? Test studies reveal the combination of both temperature and humidity plays a critical role in the preservation of fresh flowers.
The optimum temperature in a floral case is 36°F with a relative humidity of between 90% and 95%. This level of relative humidity helps flowers retain their own moisture, resulting in a fresher product with a longer vase life — up to three times longer when stored at the right temperature and humidity. Storing flowers at lower humidity levels will lead to dehydration and a shorter vase life.