All flowers have a different life span and some may last 5/6/7 or even longer. We recommend you remove all leaves below the waterline and change your water every few days to give them the best chance. Do not store them in a space that is too hot or too cold and preferably not near a fruit bowl. When stems start dying of we ask you to remove them ones and change the water. You can always cut down the flowers left over and separate them into smaller vases to display around.