“Sun scold” occurs when the petals have beads of moisture on them and are then exposed to bright sun. The water acts as sort of a magnifying glass and burns the petal. Morning sun helps evaporate the excess moisture prior to the sun exposure. If the SunPatiens are planted where it gets full-sun early, try to avoid over-headed watering in the morning (drip irrigation is better). Lighter colors, like Copact Coral Pink, Lavender Splash, White, Blush Pink, etc, don’t show the scolding like the brighter tones.