Peggy,
That is a neat idea. I have found some of the packaged salad mixes keep at least a week. I know they are more expensive but I like that they have such a good variety of greens in ones like the spring mix or spring mix with herbs. Also, I have buy just one package rather than 2 or 3 pkgs of the loose to get the variety and since there is just my husband and I now, the package works well. I will pass this jar idea on to my daughter in law who takes her lunch each day. Thanks for the response.
Carol