Accepted Cooling Methods and Optimal handling Conditions for Flowers

Optimal Handling Conditions for Flowers and Nursery Stock

Cooling Methods:

HVC: Hydro Vacuum Cooling FA-EC: Forced-air Evaporative Cooling
VC: Vacuum Cooling PI: Package-icing
HC: Hydro Cooling R: Room Cooling
FA: Forced-air Cooling
Cut Flowers Storage temperature Approximate Storage Life Highest freezing temperature Accepted Pre-Cooling Methods
°C °F °F
Carnation -0.6-0.6 31-33 2-4 weeks FA 30.8 FA, VC
Chrysanthemum -0.6-0.6 31-33 2-4 weeks FA 30.5 FA, VC
Gardenia 0-1.1 32-34 2 weeks FA 31.0 FA, VC
Gladiolus (as buds) 4–6 40-42 5-8 days FA 31.4 FA, VC
Iris, bulbous -0.6-0.6 31-33 1-2 weeks FA 30.6 FA, VC
Orchids 7–10 45-50 1-2 weeks FA 31.4 FA, VC
Rose (dry pack) 0 32 1-2 weeks FA 31.2 FA, VC
Rose (in water) 0.6-2 33-35 4-5 days FA 31.2 FA, VC
Snapdragon 0.6-2 33-35 1-2 weeks FA 30.4 FA, VC
Commodity Size of operation Remarks
Large Small*
Cut flowers FA, R, VC FA, VC When cut flowers are packaged, only use forced-air cooling
Potted plants VC, R R

Source: Focusun Research. Information gathered from academic and governmental research organizations. Although we make every effort to provide you with comprehensive, carefully researched and up-to-date information we can provide no guarantee of the relevance, accuracy, correctness or completeness of such information. Please make sure you consulted all available information in order to make the right decision.

Related Scientific and Research Articles:

WFLO Commodity Storage Manual: Floral and Nursery Stock
pdf WFLO. Global Cold Chain Alliance (2008) [English version].

Handling of cut flowers for export
pdf Reid, M.S. Division of Agriculture and Natural Resources, University of California (2009) [English version].

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