Problems on Tomatoes: How to Identify, Treat, and Prevent Issues on Fruit

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Problems on tomatoes can be from the onset of a disease, an attack from a tomato pest, or growing conditions that can lead to trouble.

Healthy tomato fruit are smooth. Skins are firm and have consistent color. In contrast, problems on tomatoes show themselves with spots or lesions on skin, other abnormal exterior markings, or inconsistent plant growth. As you monitor your plants daily, look carefully on all areas of the fruit. Look for these red flags on a particular areas of tomato fruit to quickly identify problems

Top and shoulder

Alfalfa mosaic virus

Bacterial canker
Bacterial speck
Bacterial spot
Black mold
Buckeye rot
Late blight
Stink bugs
Target spot
Yellow or green shoulders

Stem end

Early blight
Gray mold
Tomato hornworm
White mold

Blossom end

Blossom end rot
Buckeye rot

Entire fruit

Cucumber mosaic virus
Gray wall
Hard core in tomato
Herbicide damage
Irregular ripening/ whitefly
Stink bugs
Tomato fruitworm
Tomato mosaic virus
Tomato spotted wilt virus

Steps to take to prevent problems on tomato fruit

  • Plant healthy, disease-free plants.
  • Stake plants to allow good air circulation to fruit.
  • Water at the base of plants. Overhead water spreads disease easily.
  • Water in the morning or midday to minimize the amount of time fruit is wet.
  • Monitor plants daily to check for pests.
  • Avoid working on plants when fruit is wet.
  • Remove and destroy affected plants at the end of the season.
  • Solarize soil at the end of the season to destroy soil-borne fungi and bacteria.
  • Rotate crops each year.

Get more help with tomato problems

Problems on tomato leaves ...

Problems on tomato stems ...

Other tomato problems ...

Tomato diseases: how to identify, control, and prevent them ...

Blossom end rot: how to identify, control, and prevent it ...

Tomato pests: how to identify, control, and prevent them ...

Are There Problems on Your Tomato Plant’s Fruit?

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