When you receive flower seeds in a trade or at a seed swap, if the seeds don't have a date written on them, do you perform a test on a few to see if they are still viable before you plant the rest of those seeds? I just had a lady visiting that fell in love with my columbines and I told her I'd save certain ones that she liked for her when they are ready. As you know, they pop up everywhere so until they bloom, you have no idea what color they will be. I knew I had 3 or 4 pk. of columbine seeds that I rec'd at a recent seed swap but they didn't have any date on them but I felt confident by the username that they would be fresh. Then there was a pack with no name on it but dated 1997 in red ink. She wouldn't take them because they were too old and I can certainly understand that. I've read about floating seeds in water and the seeds that float aren't good and then there is a wet paper towel test. I've never tried that because I wouldn't have any place warm to keep them for them to germinate.