Cause of white line around leaf of potato leaf tomato ceilings - Ask Extension
What is causing this? Is it necessary to destroy the whole plant or could one simply remove the leaves that are affected?
Knowledgebase
Cause of white line around leaf of potato leaf tomato ceilings #930865
Asked May 06, 2026, 7:17 PM EDT
What is causing this? Is it necessary to destroy the whole plant or could one simply remove the leaves that are affected?
Howard County Maryland
Expert Response
Neither -- the plant looks fine and does not need to be trimmed or discarded. If the plant is outside (how long? has it been out overnight recently?), the minor damage around the leaf margin is likely from environmental conditions like exposure to chilly temps (even if it was above freezing, warm-season vegetables are stressed or damaged by chills), too much direct sun (if the transplant wasn't fully acclimated to conditions outside of a greenhouse or house), or getting too dry between waterings. The rest of the leaf tissue is healthy and that leaf is still providing valuable carbohydrates for the plant, so we do not recommend removing it. As the plant matures, it will naturally shed its oldest, lowermost foliage anyway.
Miri
Miri
