What to Use to Keep Caterpillars Away From Tomato Plants

Caterpillars are notorious pests that can cause significant damage to tomato plants. These creepy crawlers can strip the leaves off a plant, eat holes in the fruit, and ultimately, destroy your harvest. Fortunately, there are several methods you can use to keep caterpillars away from your tomato plants.

1. Hand Picking

The most basic method for getting rid of caterpillars is to simply pluck them off by hand. Inspect your tomato plants every few days and remove any caterpillars that you find. Be sure to discard them far away from your garden to prevent them from returning. While this method may be time-consuming, it is an effective way to control caterpillars without using chemicals.

2. Bacillus thuringiensis

Bacillus thuringiensis (BT) is a natural bacteria that targets caterpillars. This method involves applying a BT-based insecticide to your tomato plants. Once ingested, the bacteria emit toxins that cause the caterpillars to stop feeding and eventually die. This method is effective and environmentally friendly, but may require multiple applications.

3. Neem Oil

Neem oil is a natural insecticide that is derived from the seeds of the neem tree. It works by disrupting the feeding and breeding patterns of caterpillars, ultimately causing them to die. To use neem oil, mix it with water and apply it to your tomato plants every 7-14 days. As with BT, multiple applications may be necessary.

4. Diatomaceous Earth

Diatomaceous earth (DE) is a natural powder made from the fossilized remains of diatoms. It works by dehydrating the caterpillars, ultimately causing them to die. To use DE, sprinkle it around the base of your tomato plants and on the leaves. The powder should be reapplied after each rain. While this method is effective, it can be messy and may require frequent reapplication.

5. Companion Plants

Companion planting involves placing certain plants near your tomato plants that naturally repel caterpillars. Some effective companion plants for tomatoes include marigolds, garlic, and basil. These plants emit strong odors that repel caterpillars and other pests. By incorporating companion plants into your garden, you can reduce the likelihood of a caterpillar infestation.

Conclusion

By using one (or several) of the above methods, you can effectively keep caterpillars away from your tomato plants. While each method has its advantages and disadvantages, they all offer a natural and environmentally friendly way to control pests. With careful observation and diligence, you can protect your tomato harvest and enjoy delicious, homegrown tomatoes all season long!