Tomato Plant Bugs Black

Are you tired of finding those pesky black bugs on your beloved tomato plants? Don’t worry, we have got you covered! In this article, we will explore effective organic methods to rid your plants of these tiny invaders without any harmful pesticides. Let’s dive in and learn how to protect your tomato plants and ensure a healthy harvest!

The Mystery of the Black Bugs

You may be wondering, what exactly are these little black bugs infesting my tomato plants? Well, they are black aphids and flea beetles, or sometimes even both! These insects are notorious for feasting on the leaves and stems of tomato plants, as well as other garden plants.

You can easily identify aphids as tiny, soft-bodied insects that come in various colors such as black, green, pink, and grey. They reproduce rapidly during the growing season and can cause extensive damage to your plants. Aphids feed on the undersides of leaves, sucking out the sap and excreting a sticky substance called honeydew. This honeydew can attract sooty mold, leading to the growth of black spots on the leaves, hindering sunlight absorption.

Flea beetles, on the other hand, are small blue to black beetles that jump like fleas when disturbed. These beetles create numerous small holes in the leaves, causing them to resemble lace. Adult flea beetles prefer hot and dry conditions and can spread diseases like early blight and bacterial wilt.

Embracing Organic Pest Control

When it comes to protecting your tomato plants, organic pest control is the way to go. By avoiding harmful chemicals, you can ensure that your garden remains healthy and safe for consumption. Let’s explore some effective organic methods to deal with these black bugs:

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1. Don’t Use Pesticide Sprays or Dusts

The best way to combat garden pests is by never using toxic pesticide sprays or dusts. In a balanced organic garden, beneficial insects will naturally come and take care of the problem. Using pesticides can disrupt this delicate balance, harming both beneficial and harmful insects. It’s important to remember that a few aphids or flea beetles won’t cause significant harm to your plants, as beneficial insects will eventually arrive to devour them.

2. Keep Plants Healthy

Garden pests are more likely to attack sick and stressed plants. Ensure your plants are healthy by providing them with the right conditions to thrive. Start by planting seeds at the right time or starting them indoors to protect them. Healthy soil is essential, so make sure it has the proper pH and is rich in nutrients. Adequate sunlight is also crucial for tomato plants, so be sure to space them out properly and provide them with ample sunshine.

3. Choose Disease-Resistant Varieties

Prevent plant stress by selecting disease-resistant tomato varieties. Consult your local county extension office for a list of recommended varieties for your area. Moreover, consider saving your own tomato seeds from year to year. This method allows you to breed strong and desirable traits specific to your area and pest problems.

4. Harness the Power of Companion Planting

Companion planting is a fantastic way to deter pests naturally. Some plants, like those in the allium family (such as onions and garlic), act as a protective force field around vegetables. Nasturtiums also deter aphids and flea beetles. By interplanting vegetables with herbs, other vegetables, and flowers, you confuse garden bugs and create a diverse ecosystem that keeps pests under control.

5. Embrace Crop Rotation

Crop rotation involves changing the location of crops from one year to the next. This practice helps prevent diseases and insect larvae from becoming established in the soil. By avoiding planting the same crop in the same spot year after year, you disrupt the life cycles of pests, reducing their numbers. Aim for a four-year crop rotation cycle, but remember that companion planting can further enhance your efforts.

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6. Attract Natural Predators and Deter Pests with Flowers

You can create a welcoming environment for beneficial predators by planting colorful flowers in your garden. Lacewings, lady beetles, and parasitic wasps are natural enemies of aphids and flea beetles. These insects will gladly make a meal out of the black bugs plaguing your tomato plants. Additionally, marigolds and herbs like basil can help deter garden pests while adding beauty to your garden.

7. Maintain a Weed-Free Garden

Weeds not only compete with your plants for resources but also serve as habitats for garden pests. Keep your garden free of weeds and use mulch to suppress their growth. By maintaining a clean and tidy garden, you provide less shelter for pests and ensure that your plants receive adequate air circulation and sunlight.

8. Remove Bugs with Water

If beneficial insects haven’t arrived yet, you can manually remove the black bugs from your tomato plants using a strong spray of water. This method works best on aphids and will displace flea beetles. Make sure to spray the undersides of leaves as well, where pests often hide.

9. Shield Young Plants with Row Covers

For small-scale gardens, you can protect young tomato plants from pests by covering them with floating row covers. These covers act as a physical barrier, preventing pests from reaching your plants. Keep the covers on until beneficial insects become more prevalent or consider using a hoop house or greenhouse if aphids and flea beetles aren’t an issue inside.

10. Prune and Trellis for Optimal Airflow

Pruning and trellising your tomato plants can maximize airflow and sunlight, making conditions less favorable for aphids and flea beetles. Regularly check your plants and train the new growth, removing suckers that grow too close to other stems. This practice allows for better air circulation and reduces the chances of pests infesting your plants.

11. Water at the Root Level

Contrary to popular belief, it’s best to water garden plants at the root level rather than wetting their leaves. Watering at the roots minimizes the risk of fungal diseases and unwanted pests. Water your plants in the morning so that the leaves have time to dry off during the day, ensuring a healthy plant environment.

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Using Organic Pest Control as a Last Resort

While the above methods should be your go-to for organic pest control, sometimes the situation calls for further action. However, it’s important to note that these methods may harm beneficial insects, so they should be utilized as a last resort:

12. Insecticidal Soap

Insecticidal soap is a commercially-made product specifically designed to kill garden pests. Follow the package instructions for proper dilution and application. Avoid spraying on windy days to prevent drift and only use it if water alone doesn’t solve the problem.

13. Diatomaceous Earth

Diatomaceous earth (DE) is a naturally occurring substance made from fossilized phytoplankton called diatoms. It can be effective against aphids and flea beetles, but it also harms beneficial insects. If using DE, wear a mask to avoid inhaling the dust and apply it in the late afternoon when beneficial bugs are less active.

14. Horticultural Oil

Horticultural oils are petroleum-based contact insecticides that smother insects and their eggs. There are different types available for different seasons. Take precautions when using horticultural oil, wearing protective clothing and spraying on calm days to prevent drift.

15. Neem Oil

Neem oil is a broad-spectrum miticide and insecticide derived from the neem plant. It kills insects on contact by smothering them. As with horticultural oils, be cautious not to spray beneficial insects. Apply neem oil in the late afternoon when wind is minimal and wear protective clothing.


In conclusion, protecting your tomato plants from black bugs is achievable with organic pest control methods. By embracing these techniques, you can create a healthy and balanced garden environment, free from harmful chemicals. Remember to start with the least harmful methods and only resort to stronger measures if absolutely necessary. With patience and perseverance, your tomato plants will thrive and reward you with a bountiful harvest. Happy gardening!

Ames Farm Center