What Causes Bumps On Tomato Stems

When you pick your tomatoes up from the grocery store, do you ever wonder what causes those bumps on the tomato stem? What is it that makes them appear like that? In this blog article, you’ll find out how and why these bumps are formed.

Bumps on tomato stems are a common problem that can be really frustrating. But, if you know what causes these bumps, it will be easier to avoid them in the future. Check out the list of causes for yourself!

What Causes Bumps on Tomato Stems

Tomatoes are a favorite vegetable of many people, and they come in a variety of shapes and sizes. However, some people may find bumps on the stems of their tomatoes.

The bumps can be caused by a number of things, including fungal infection, insect bite, or damage from a bacterial infection. If you notice bumps on the stem of your tomato, it’s important to determine the cause and take appropriate action.

Some tips for identifying the cause of bumps on tomato stems include inspecting the tomato for signs of fungal infection, such as webbing or brown patches on the skin; checking for insect bites on the stem; and checking for signs of bacterial infection, such as slimy spots or pus on the stem. If you suspect any of these causes, take appropriate steps to treat the problem.

What are the Symptoms of Tomato Bump Pots?Symptoms of Bumps On Tomato Stems

Tomato bumps are benign growths on tomato stems caused by a plant hormone called gibberellin. Gibberellin is important for plant growth and development but can also cause the abnormal growth of cells on the stem. Tomatoes with bump pots typically have large, protruding bumps on their stems. The bumps may be green, yellow, or orange in color and can vary in size from small to large. The bumps may also have a slightly bulbous shape.

Tomato bumps are a common problem in gardens and farmer’s markets, and they can be frustrating to diagnose. The bump usually appears on one of the tomato’s stems, and it can range in size from a dime-sized bump to a large lump. The cause of tomato bumps is unknown, but they may be caused by a variety of factors, such as disease or pests. Here are some of the most common symptoms of tomato bumps:

-A bump on a tomato stem

-The bump is larger than the surrounding area

-The bump is circular or oval in shape

-The bump feels soft to the touch

-There is no apparent damage to the stem

Treating Tomato Bump Pots

If you find bumps on tomato stems, you can do a few things to try and help your plants heal. First, make sure that aphids or mites do not cause the bumps. You can try treating them with a Bayer Contour EC product if they are not. This will help to repel insects and help your plants to heal.

When you have bumpy tomatoes on the stem, there is most likely a cause. Below are some common causes and how to treat them.

  1. Blossom end rot is caused by abnormal weather conditions such as high humidity or overwatering. The moist environment leads to fungal overgrowth, weakening the plant’s vascular system and causes the blossom end to rot. To treat this, remove any infected plants, waterless extensively during dry periods, and keep the soil evenly moist. You may need to replace the plants if this is a serious problem.
  2. Aphids: These small but pesky insects love to feed on tomato leaves and stems. When populations build up, they create bumps and lesions where they feast. To control aphids, use a registered pesticide safe for plants, monitor populations regularly, or trap them with a sticky insect monitor before they can do any damage. If these treatments don’t work, you may need to remove the plants and start over.
  3. Cankerworm moths: These pests lay their eggs in tomato foliage, and young caterpillars eat away at the plant when hatched. These pests are becoming more common in Colorado. To prevent them from damaging your plants, use a pesticide safe for houseplants. If you find damaged plants, take action as soon as possible by removing and destroying the plant or disposing of it properly.


There are a few possible causes for bumps on tomato stems. First, it could be a result of a fungal infection. When the fungus infects the tomato stem, it can create bumps that look like those on tomatoes. You can treat this infection by spraying the affected area with an antifungal solution or using a fungicide. If you think you have a bacterial infection, your best bet is to use an over-the-counter antibiotic such as neomycin or clindamycin. Finally, it might be time to see your doctor if the bumps don’t go away after trying these solutions.

News Reporter
Mark Buckingham grew up in a Plumbing and HVAC family business. Mark has over 21 years of professional internet marketing and SEO experience (in results). He’s a leading expert in helping Plumbing, HVAC and Electrical businesses get to the top of Google, boost leads, get more customers and grow their company. As the founder of Skyrocket Results SEO, he's on a mission to help HVAC contractors, Plumbers and Electricians avert internet marketing mistakes, avoid wasted marketing dollars, increase profits and build wealth. His free Plumbing, HVAC and electrical company marketing blog is: www.SkyrocketResultsseo.com/blog

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