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What is the floral fridge temperature for flowers?

Updated February 21, 2017

Florists rely on the quality and freshness of their flowers to build and maintain a loyal clientele. To ensure their supplies of cut flowers last as long as possible, their coolers and refrigerators must consistently be kept at precise temperatures.

Refrigerator Temperatures

A floral cooler or refrigerator's ideal temperature is between 1.11 and 2.22 degrees Celsius for cut flowers in a hydrating solution, although many units hover at around 38F. Temperatures that fluctuate 5 degrees plus or minus of 38F can destroy or shorten the lives of flowers. If the flowers have been removed from the hydrating mixture and placed in a preservative emulsion, they store best at a constant 34F.

Display Units

Fresh flowers in a display unit also keep best between 34 and 36 degrees Fahrenheit to prevent drooping or lost blooms. The containers should be plastic as metal may alter the pH balance of the water or alter the preservative qualities of additives.

Humidity Requirements

Besides controlled temperatures, the humidity of floral storage areas must be carefully controlled. Storage and display units need humidity levels of 90 to 95 per cent. Flowers placed in preservatives require a minimum humidity level of 80 per cent.

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About the Author

Cassie Damewood has been a writer and editor since 1985. She writes about food and cooking for various websites, including My Great Recipes, and serves as the copy editor for "Food Loves Beer" magazine. Damewood completed a Bachelor of Arts in English with an emphasis in creative writing at Miami University.