Device for keeping cut flowers in condition, method for displaying cut flowers, and a cover and holder for use therein

A method for displaying cut flowers at a location, said method comprising the steps of:

• placing a first bouquet of cut flowers in a first holder in heat-exchanging contact with a cooling device at the location:
• and
• when deterioration of the bouquet is imminent, exchanging the first holder with the first bouquet of flowers therein with a second holder having a fresh second bouquet of cut flowers therein.

A cover for enclosing an open top of a holder for supporting flowers therein, said cover comprising:

• a shell having open and closed positions, said shell being substantially liquid-tight in the closed position except for opening on its underside;
• and
• a first profile disposed adjacent to the underside of the shell to engage a substantially complementary second profile on an upper side of the holder for connecting the cover to the holder.