To help prevent desiccation and to extend vase life, some producers attach to each stem a small plastic bottle containing water and preservative. Packaging Carton sizes vary. There are typically four or six trays inside each carton, and the number of flowers per tray varies depending on size and buyer specifications. Storage Optimally, anthuriums should be stored at 13oC, and at 90 to 95 percent relative humidity. Below 10oC to 12oC, chilling injuries occur, and spathes turn blue or wilt.
High humidities can help extend vase life by conserving water loss through transpiration.
Care should be taken to ensure that harvested anthuriums are not exposed to ethylene. Ethylene harms anthuriums by restricting water uptake, shortening vase life, and causing the flowers to shed and turn blue. For these reasons, anthuriums should not be stored with ethylene-producing products such as ripening fruits and most flowers. As noted earlier, treatment with silver nitrate increases vase life. Longevity is also extended by waxing, which has the added benefit of preserving the glossiness of the anthurium blooms.