My sister-in-law gave me some seeds from her columbine 2 years ago and I spread them that fall. I was so disappointed that nothing came up the following year. This year however I had 4 plants, including these 2 in the little space between my garage and sidewalk. I wonder if the seeds need 2 winters before they will sprout. I also wonder if I could freeze some seeds for about a month and then plant them and have plants the next year. Does anyone have the answer for that?