Colour Change With Runner Bean Seeds.
3 years ago, one of my runner bean plants produced a pod which contained very dark blue, almost black beans. I have test grown these evety season, and instead of reverting to normal mottled beans, they still faithfully produce the new colour. the beans started off as Suttons "Best of All", over 25 years ago, and I always dry off seed each year.
- 8 Oct, 2008