Recently my balloon flowers, which have been blooming beautifully, are turning from white to purple. Does anyone know why?
Certified GKH Gardening Expert
This is a common occurrence. Purple is caused by the antioxidant pigment chemical called anthocyanin. This happens to be a very unstable chemical that can lay dormant in a co-dominant genetic fashion. Often times it can be brought about by temperature changes. This is nothing to worry about. Also, over time, the plants may cross-breed. This will cause natural color change over a few generations as well. Enjoy watching the process of natural selection at work!
Here is an article for more information on the flower: https://www.gardeningknowhow.com/ornamental/flowers/balloon-flower/growing-balloon-flowers.htm