Optimal Temperature for Storing Flowers

Updated July 20, 2017

Cut flowers need to be well hydrated to last. They should be kept in a cool place, but the water in their vase right after they are cut should be warm.

Right after Cutting

Flowers absorb warm water better than they absorb cool water. To ensure maximum hydration, place them in a vase filled with water that is about 43.3 degrees Celsius, about the temperature of bath water. Then place them somewhere cool for an hour or two.

Storage Temperature

Storing flowers at about 1.67 degrees Celsius will keep them fresh longest. Cool temperatures minimise water loss and slow development. Any temperature above freezing but below 40 or 10 degrees Celsius will work well. If the flowers are being displayed in a room warmer than that, putting them in the fridge or another cool place at night or whenever they are not being displayed will prolong their vase life.

Other Considerations

Storing flowers in a fridge full of fresh produce may decrease their vase life, as fruits and vegetables release ethylene, a ripening hormone that speeds ageing in flowers.

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About the Author

Fiona Wood has been working in the science communication field since 2007. She writes about gardening for various websites. Wood has a Master of Arts in plant biology from Duke University and a Bachelor of Arts in English literature from the University of British Columbia.