Rose of sharon turning color

Question

My purple rose of sharon bush recently begin producing pink flowers on about half of the bush and also white flowers on one large branch. The bush is probably 12-15 years old and has never produced anything except purple flowers in previous years. why is this happening???

Answer 1

It sometimes happens that hybrid plants will 'revert' and display flowers or growth patterns of an ancestor plant, so if you confirm that yours is a single plant, that is probably the reason for the multiple colored flowers.