There are 3-4 general methods of storage of flowers

1. Refrigerated storage: Most widely used method of storage of cut flowers. 

There are two types 

(a) Wet storage and 

(b) dry storage.

(a) Wet storage: Flowers stored with their bases dipped in water or preservative solution, Good for short duration, day to day handling. Stored at temperature of 2-4°C.

(b) Dry storage: Flowers are sealed in plastic bags to prevent loss of moisture. More laborious but hold the flowers for longer duration. Storage at 0-1°C is ideal for temperate flowers (Roses, carnation, chrysanthemum) but tropical flowers like anthurium, cattleya, heliconia etc. storage is done at 7-15°C and for sub-tropical flowers like gladiolus, jasmine, proteas etc. storage is done at 4-7°C.

2. Controlled atmosphere storage (CA): Low temperature storage in gas tight chambers under decreased levels of oxygen (O₂) and increased levels of carbon dioxide (CO₂). CO₂ levels higher than 4% and O₂ level lower than 0.4 per cent causes injury and anaerobic conditions respectively.

3. Modified Atmosphere storage (MA): Less precise form of CA storage, the dry storage of flowers in sealed bags leads to reduction in O₂ and increase in CO₂ levels due to respiration of the tissue. Buildup of very high level of CO₂ may cause damage to flowers.

4. Hypobaric or Low pressure storage (LPS): Storage at low atmosphere pressure under refrigerated conditions, continuous ventilation and high relative humidity. Rapid loss of water from tissues is major disadvantage and cost of installation is also high.