Frost and cold injury causes leaves to turn white
Frost injury is commonly seen in the early spring when warm-season vegetable crops experience night temperatures below 32° F. Affected leaves out-grow the injury if plants are healthy and not stressed further by low temperatures.
![whitened spots caused by cold weather on tomato leaves](/extension.umd.edu/sites/extension.umd.edu/files/styles/optimized/public/2021-03/hgic_veg_NonLiving_cold%20injury2_JT_400.jpg?itok=qByG9rz4)
![white spots on a tomato leaf from the cold](/extension.umd.edu/sites/extension.umd.edu/files/styles/optimized/public/2021-03/hgic_veg_NonLiving_cold%20injury_JT_400.jpg?itok=2YCWBkhP)