Have you ever heard of planting white Impatiens in same hole as colored Impatiens causes all flowers to turn white? It is happening here and at my daughter's house. It starts almost immediately, in a few days after planting. You can actually see the petals of the red, pink, purple flowers 'bleaching out' and turning white. We live in the Chicago area. We just planted one white with 3 colored plants and now they are all turning white.
Certified GKH Gardening Expert
Temperatures above 70 degrees F will cause Impatiens flowers to fade in color, especially if the stems and roots are dry.
Keeping the plants watered daily will help retain the nice bright colors.