How are your tomato plants doing? You may be seeing abnormal signs in your tomato plant indicating something’s not quite right. Let’s see if we can troubleshoot a few common issues with tomatoes.

Blossom End Rot (Black Bottomed Tomatoes)

This is called blossom end rot and is relatively common for tomatoes. It’s caused by a calcium imbalance in the plant. Avoid this problem by maintaining consistent water to your tomato plant (not too much or too little water). To treat the black bottom problem and end the season with some good harvest, pick off the affected fruit (otherwise they’ll just take needed nutrients from the plant and future fruits) and stick to a consistent watering plan. By doing these two things your tomato plant will most likely correct itself. Also, note that you can still eat tomatoes with blossom end rot–just cut off the black part.

Spotted Tomato Leaves (Fungal or Bacterial Diseases)

If your tomato plant develops spots on the leaves, this is a sign of fungal or bacterial diseases. Usually, these diseases start on the leaves closest to the ground. Remove leaves that have the disease (you can remove up to a third of a tomato plant’s leaves without harming the plant). To prevent disease, water the soil under the plant and not the leaves. Use mulch to cover the base of your tomato plant. Also, try not to plant your tomatoes in the same place within your garden every year. Note: Don’t can or eat tomato fruits that has been infected by disease and have spots.

Lots of Leaves, But No Tomatoes

If you have a big, green, bushy tomato plant with just a few flowers, check to see what variety of tomato you have and the estimated days to maturity. Some tomato plants simply take longer to develop blossoms and fruit. The most probable cause of little to no fruit development is too much fertilizer or too much nitrogen in the fertilizer. Check the NPK of the fertilizer you applied. The first number (nitrogen) should not be higher than the other two numbers; otherwise, you are telling your plant to grow leaves and not fruit. If you have been using a balanced fertilizer, your plant could be over-fertilized. Wait to fertilize until fruit appears and is growing. Be sure to also give your tomato plants consistent water. An inconsistent watering schedule could also be the cause of lots of leaves and not blossoms.

Tomato Hornworm Damage (Missing Stems or Leaves)

If you come out one day and notice a whole stem or section of your tomato plant is missing, a Tomato Hornworm is most likely the culprit. Tomato hornworms are giant green caterpillars with a horn on their tail. They are capable of eating leaves, entire stems, and the fruit of tomato plants. They can be devastating if not found. Tomato hornworms are excellent at camouflage and can be difficult to find. Manually removing them is the only real remedy to save your tomato plant. To make finding them easier, consider trying a blacklight at night. To prevent and kill these pests from taking over, consider treating your plants with neem oil (an organic home gardening solution).

Wilting or Drooping Tomato Plants

If your tomato plant is drooping or sagging, this is most likely caused by a lack of water. As we’ve said previously, consistent watering is important to tomato plants. Tomatoes also don’t stand up if they are not getting enough sunlight, so make sure your tomatoes are planted in a sunny spot that gets at least 8 hours of direct sunlight per day.

Final Tips for Healthy Tomato Plants

Consistency is key—especially with watering and fertilizing. Keep an eye out for early signs of disease or pests, and act quickly. With the right care, your tomato plants can bounce back from most common issues and still produce a delicious harvest.

Best Disease Resistant Tomatoes to Grow

For more detailed information on how to grow and harvest tomatoes check-out our Free Downloadable Vegetable Growing Guide PDF.