Hello! From the photos, tomato is not a disease, but a physiological manifestation caused by the environment. Especially in summer, the temperature difference between day and night is small, which leads to hypoplasia of growing points. After planting, as the temperature difference between day and night becomes larger, side branches will gradually appear. Suggestion: 1, select high-temperature resistant varieties; 2. Pay attention to lowering the temperature and increasing the temperature difference between day and night when raising seedlings.