Morning Glories: Grandpa Ott x Heavenly blue, 1 by gofast

gofast wrote:
Another photo here. I have come to the conclusion that this is some kind of chemical reaction. However, from the colour point of view: How can blue change into pink unless there is already red in the blue and the blue is erased in some spots that I don't understand...I measured the diameter of heavenly blues (7.5 cm) and these bi-colour blues (6.5 cm), so there is a difference in diameter of 1 cm...However, occasionally there are just smaller heavenly blues, too. I am going to pop the question regarding chemical colour changes in a german discussion forum, perhaps there is some chemist who can explain this to me...


Martin