DIAGNOSE & FIX

Tomato Problems

Something is wrong with your tomato plant. The leaves are curling, the fruit is cracking, or something is taking bites overnight. Take a breath. Almost every tomato problem has a name, a cause, and a fix, and most of them are simpler than they look. This section helps you figure out which one you are staring at.

Start with what you see

Leaves acting strange

Yellowing, curling, purple veins, brown spots, white patches. Leaves are the plant’s dashboard, and each pattern points somewhere different.

Fruit gone wrong

Black bottoms, cracks and splits, catfacing, sunscald, fruit that refuses to turn red. Usually fixable, often preventable next time.

Bugs and bites

Hornworms, aphids, whiteflies, cutworms, and the mystery creature that ate half a tomato overnight. Identify the culprit, then deal with it.

Diseases

Early blight, late blight, septoria, wilts and viruses. Learn to tell them apart, what is treatable, and when to pull the plant.

The Problem Diagnoser is coming

Pick what you see, answer two or three questions, get the likely cause and the fix. Until it ships, the guides in this section cover the same ground step by step.