Causes & Differences π¦ Plant Diseases| by Guy Saldiveri | April 9, 2026 You have a thriving tomato or pepper plant. Leaves vibrant green, stems full of flowers and fruit, everything looking nice and healthy—until you notice that spot. It could be on the very bottom of the fruit, or on the side. Similar in appearance—blanched white and spreading outward—it looks like a sore that should be oozing, but it's hard and scaly—at least initially. You stare, scratch your head, and wonder just what is going on here. You've done everything right, your plants look healthier than they have ever looked, well-watered, well-fed, but this… There are two possibilities, caused by two very distinct issues. You are most likely dealing with either Sunscald or Blossom End Rot. Both are very common issues that, believe it or not, are not classified as actual diseases. Both, however, affect just about every gardener that's ever grown these types of vegetables. So if they aren't actual ...