Why did my azaleas turn white?
My azaleas used to be pink, but now they bloom in white only. What is wrong, and how do I correct this?
Certified GKH Gardening Expert
Azalea bloom color can change as they age according to the Journal American Rhododendron Society:
Also, according to the Azalea Society of America, a mild phosphorus deficiency may result in reduced flowering and lighter than normal flower colors.
We also have an article on our website that discusses fading flower colors that may interest you and prove helpful: