Tomato Plant Problem Identifier: Diagnose Leaf, Fruit & Pest Issues
Yellow leaves, black spots on the fruit, holes overnight? Pick what you see on your plant and get the most likely cause plus the fix, in plain words.
Tomato Problem Identifier
Tell us where the trouble is and what you see. You get the likely cause, how to fix it now, and how to stop it coming back.
This is a guide to the most common tomato troubles, not a lab test. When two causes look alike, we flag the one to rule out first. For deep dives see our tomato problems guides.
Most tomato problems trace back to a short list of usual suspects: watering that swings between soaked and bone dry, common fungal diseases like early blight and septoria, a handful of well known pests, and weather the plant does not like. The identifier above walks the same diagnostic path an experienced grower would, and the Problems section of this site goes deeper on every single one of these conditions.
